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Home > CA Providers > Urologists

Dr. Mark B. Sender, MD, MDIN

(991 Ratings)

Specializes in: Urology (Urinary Tract Disease)

Emory University School of Medicine (1981)

Professional interests include: endourologic procedures, penile implant, Botox injection, and more.

23823 Valencia Boulevard Suite 130
Santa Clarita, CA 91355

(661) 705-1774

Dr. Mark B. Sender, MD, MDIN is an urologist in Santa Clarita, CA specializing in urology (urinary tract disease). He graduated from Emory University School of Medicine in 1981 and has 45 years of experience. Dr. Mark B. Sender, MD, MDIN is affiliated with Unio Specialty Care, Unio Specialty Care and Santa Clarita Urology Associates.

Office Locations

23823 Valencia Boulevard Suite #130
Santa Clarita, CA

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Unio Specialty Care

23823 Valencia Boulevard Suite 130
Santa Clarita, CA 91355

(661) 705-1774

(661) 253-2837

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23928 Lyons Avenue Suite 202
Newhall, CA 91321

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Some issues Dr. Mark B. Sender, MD, MDIN can help you with:

Kidney Stones

Kidney stones are hard deposits that form in the kidneys, made up of minerals that are normally present in urine. They can vary in size, from as small as a grain of sand to as large as a nickel, occasionally even larger. Sometimes they lodge in the kidney, and sometimes they break free and make their way out through the urinary tract, which can be extremely painful.

Kidney stones can be smooth or jagged and are yellow to brown in color. They are mostly comprised of the minerals calcium, oxalate, and phosphorus. Examining the stones to see what they are made of can show what caused the stone to be formed in the first place. For example, a stone made of mostly calcium, which is the most common type, can happen any time the urine becomes too concentrated due to dehydration or a blockage in the kidney. A uric acid stone forms when acid levels in the urine get too high, usually due to excessive consumption of animal protein such as meat and fish. A struvite stone is a sign of certain infections, and a cystine stone can be due to a genetic disorder that raises the risk of kidney stones.

The most common symptom of kidney stones is pain, either in the back or lower abdomen, or severe pain when urinating. There may also be blood in the urine. Treatment for kidney stones depends on how large the stone is. Very small stones can pass out of the body on their own, and they do not require treatment other than drinking adequate water and taking pain killers. Larger stones need to be broken apart and removed. The main treatment options are:

Shock wave lithotripsy, which uses sound wave vibrations to break apart the stone
Percutaneous nephrolithotomy, or the use of a very tiny tool (like a wire inserted through the back) to break apart and remove the stone
Ureteroscopy, a thin tube inserted through the urethra and bladder to the stone, where tiny tools can grasp the stone and remove

People who have had one kidney stone are at risk of developing another. To reduce this risk, patients are given instructions specific to the type of stone they developed. Generally the instructions will include drinking more water to dilute the urine, but it may also involve lowering sodium intake or eating less meat.

Pelvic Organ Prolapse

Pelvic organ prolapse is the bulging of pelvic organs into the vaginal canal due to a weak pelvic floor, causing symptoms like discomfort, pain, urinary problems, and constipation. The pelvic floor is a group of muscles that support the pelvic organs, which are made up of the bladder, rectum, small bowel, uterus, and vagina. Vaginal childbirth, menopause, pelvic surgery, radiation treatments, or being extremely overweight may cause the pelvic floor to weaken. Pelvic organ prolapse is a very common disorder among women, particularly for those who are over 50.

The choice of treatment for pelvic organ prolapse depends on the severity of the condition. Mild to moderate prolapse may be managed by doing pelvic floor strengthening exercises, taking hormone replacement therapy, or using pessaries. Pessaries are small devices inserted into the vagina to help support the pelvic organs. Pessary fitting is a quick procedure done in a doctor's office. For severe prolapse, surgical treatment may be necessary. Pelvic organ prolapse surgery repairs the following:

Cystocele or bladder prolapse, where the bladder sags into the vagina. The surgeon repairs a cystocele by strengthening the front wall of the vagina using stitches so that the bladder will no longer sag.
Enterocele or small bowel prolapse, which occurs when the small bowel descends towards the vagina. To correct an enterocele, the tissues between the small bowel and the vagina are sewn together, allowing them to provide more support.
Rectocele or posterior prolapse, which is the bulging of the front wall of the rectum into the back wall of the vagina. Surgery to repair a rectocele removes the excess stretched tissue between the rectum and vagina.
Uterine prolapse, which occurs when the uterus slips down to the vagina. To treat a uterine prolapse, the surgeon may secure the neck of the uterus (called cervix) to a ligament in the pelvis using stitches. Another option for this type of prolapse is a vaginal hysterectomy, which is the removal of the uterus.

Each of these procedures is performed through a vaginal incision, but an enterocele repair may use the abdominal approach as an alternative. If two or more pelvic organs have prolapsed, a combination of any of these procedures may be performed during the same surgical session.

For women who no longer wish to have intercourse, an operation called colpocleisis

may be a surgical option as well. By closing the vaginal canal, colpocleisis treats pelvic organ prolapse and eliminates any risk of its recurrence.

In most instances, pelvic organ prolapse surgery only requires a hospital stay of one day. Patients may experience vaginal bleeding for the first few weeks following surgery. If this happens, patients should use sanitary pads rather than tampons, as a higher risk of infection is associated with the use of tampons. To further help with recovery, patients should begin doing gentle pelvic floor strengthening exercises a few days after surgery. Doing these exercises at least three times a day as a routine tightens the pelvic floor muscles and prevents the recurrence of prolapse.

Sacral Nerve Stimulation (SNS)

Sacral nerve stimulation (SNS), also called sacral neuromodulation, is a treatment for bladder and bowel problems. Using thin, insulated wires (electrodes) and a device called a neurostimulator, sacral nerve stimulation can deliver electrical signals to correct communication issues between the brain and the bladder. The electrical signals reach the sacral nerve, which is responsible for muscles that control the bladder and rectal sphincter. By targeting this nerve, sacral nerve stimulation can influence the activity of pelvic muscles to treat overactive bladder, fecal (bowel) incontinence, and chronic constipation. When diet or lifestyle changes, medication, and other conservative options fail to work, neurostimulation is an option.

SNS surgery has two parts. The first part is an evaluation phase, during which it is determined if neurostimulation is effective treatment option for patients. Patients lie on their stomachs while a temporary electrode lead, through which electrical signals will travel, is inserted into their lower back. A permanent lead may also be used, and it would remain in place should the trial period prove successful. The lead is connected to an external neurostimulator. The procedure takes approximately one hour and may be performed in a doctor's office, hospital, or surgical center. After the procedure, patients are required to keep a log of their toilet habits over approximately two weeks, and they may need to limit their activities during this time. If patients' symptoms do not improve after the trial, they may repeat the test phase or discuss other treatment options with their doctors.

If the trial stimulator is effective, patients will undergo the second phase of SNS surgery, which is permanent implantation. In the second stage of surgery, the temporary lead (if used) will be replaced with a permanent lead. Then the sacral nerve stimulator will be implanted subcutaneously (under the skin) in the upper buttock. Patients should be able to return home the day of their procedure.

If patients are sore after surgery, their doctors may give them medication. The sacral nerve stimulator will be programmed after the procedure, and when it is turned on, patients should feel a sensation similar to pulling, tapping, tingling, or pulsing. Patients will need to work with their doctors during follow-up appointments to determine the most effective settings for the stimulator. Patients will be given instructions on how to adjust it themselves at home. The stimulator is powered by a battery that will last approximately five years, after which it can be replaced.

Noteworthy Medicare Patient Procedures Performed by Dr. Mark B. Sender, MD, MDIN in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

injections

By Affordability:

hormone therapy

In 2023, among providers in related specialties within California, Dr. Mark B. Sender, MD, MDIN performed more injections procedures for Medicare patients than 95% of them and he also had a list price for hormone therapy that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. Mark B. Sender, MD, MDIN performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

abdominal ultrasound

anal sphincter electromyography

electromyography

endoscopy

hormone therapy

transabdominal ultrasound

ultrasound

urinalysis

By Affordability:

cystoscopy with ureteral stent placement

hormone replacement therapy

ureteral stent placement

In 2012, among providers in related specialties within California, Dr. Mark B. Sender, MD, MDIN performed more abdominal ultrasound, anal sphincter electromyography, electromyography (EMG), endoscopy, hormone therapy, transabdominal ultrasound, ultrasound (sonogram), and urinalysis procedures for Medicare patients than 75% of them and he also had a list price for cystoscopy with ureteral stent placement, hormone replacement therapy, and ureteral stent placement that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2012 were urologic procedures, lab tests, ultrasound (sonogram) and minimally invasive procedures.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	321
ablation	78
anorectal procedures	46
blood draw	115
catheterization	80
cryotherapy	64
diagnostic procedures	62
doctor visit	1337
foreign body removal	27
gastrointestinal procedures	11
hormone therapy	32
hospital care	305
implant surgery	11
inpatient care	305
lab tests	1237
laser treatment	64
lithotripsy (stone fragmentation)	39
minimally invasive procedures	385
minor procedures	16
neurostimulator lead placement	21
neurostimulator replacement	11
pelvic imaging	56
peripheral nerve stimulator replacement	11
potassium test	16
stent placement (stenting)	59
ultrasound (sonogram)	394
urologic procedures	1356

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2013 were urologic procedures, lab tests, ultrasound (sonogram) and inpatient care.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	254
ablation	53
anorectal procedures	73
blood draw	118
catheterization	62
cryotherapy	53
cytology	35
diagnostic procedures	73
doctor visit	1409
foreign body removal	24
hormone therapy	212
hospital care	336
injections	186
inpatient care	336
lab tests	959
laser treatment	53
lithotripsy (stone fragmentation)	20
minimally invasive procedures	290
pelvic imaging	333
potassium test	15
stent placement (stenting)	38
ultrasound (sonogram)	559
urologic procedures	1098
vascular procedures	42

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	392
Female	227

**Ethnicity**
Non-Hispanic White	509
Black	0
Hispanic	58
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	288
From 75 to 84	173
85 and over	107
Less than 65	51

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2013

Hypertension	69
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	40
Depression	20
Chronic Kidney Disease	30
Asthma	11
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	17
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2014 were ultrasound (sonogram), urologic procedures, lab tests and pelvic imaging.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	446
ablation	66
anorectal procedures	54
blood draw	41
catheterization	69
cryotherapy	45
diagnostic procedures	65
doctor visit	1180
gastrointestinal procedures	11
hormone therapy	104
hospital care	322
implant surgery	11
injections	104
inpatient care	322
lab tests	739
laser treatment	45
minimally invasive procedures	317
minor procedures	11
neurostimulator lead placement	33
neurostimulator replacement	11
pelvic imaging	663
peripheral nerve stimulator replacement	11
stent placement (stenting)	40
ultrasound (sonogram)	985
urologic procedures	873
vascular procedures	124

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	394
Female	195

**Ethnicity**
Non-Hispanic White	486
Black	18
Hispanic	65
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	258
From 75 to 84	189
85 and over	96
Less than 65	46

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2014

Hypertension	71
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	42
Depression	19
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	11
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	16
Cancer	17

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2015 were injections, hormone therapy, lab tests and urologic procedures.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	269
ablation	12
anorectal procedures	48
blood draw	107
catheterization	43
cryotherapy	12
cytology	21
diagnostic procedures	67
doctor visit	1019
hormone therapy	13200
hospital care	154
injections	13200
inpatient care	154
lab tests	684
laser treatment	12
lithotripsy (stone fragmentation)	12
minimally invasive procedures	196
minor procedures	19
MRI (magnetic resonance imaging)	13
pelvic imaging	411
potassium test	11
preventive care	27
stent placement (stenting)	18
ultrasound (sonogram)	535
urologic procedures	675
vascular procedures	144

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	792
Female	318

**Ethnicity**
Non-Hispanic White	944
Black	38
Hispanic	88
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	502
From 75 to 84	350
85 and over	172
Less than 65	86

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2015

Hypertension	70
High Cholesterol	61
Stroke	10
Ischemic Heart Disease	40
Depression	21
Chronic Kidney Disease	31
Asthma	17
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	15
Cancer	19

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2016 were hormone therapy, injections, urologic procedures and lab tests.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	304
anorectal procedures	48
blood draw	88
catheterization	63
cytology	48
diagnostic procedures	59
doctor visit	1302
foreign body removal	11
hormone therapy	19152
hospital care	322
injections	19152
inpatient care	322
lab tests	695
minimally invasive procedures	174
minor procedures	11
MRI (magnetic resonance imaging)	19
pelvic imaging	472
potassium test	24
stent placement (stenting)	18
ultrasound (sonogram)	621
urologic procedures	704
vascular procedures	150

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	453
Female	195

**Ethnicity**
Non-Hispanic White	535
Black	16
Hispanic	64
Asian	16
Other	17
Native American	0

**Age**
From 65 to 74	282
From 75 to 84	213
85 and over	115
Less than 65	38

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2016

Hypertension	71
High Cholesterol	63
Stroke	8
Ischemic Heart Disease	40
Depression	21
Chronic Kidney Disease	38
Asthma	21
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	16
Cancer	19

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2017 were hormone therapy, injections, lab tests and urologic procedures.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	208
ablation	44
anorectal procedures	14
blood draw	217
catheterization	86
cryotherapy	26
cytology	73
diagnostic procedures	35
doctor visit	1923
foreign body removal	19
hormone therapy	38107
hospital care	347
injections	38075
inpatient care	347
lab tests	1192
laser treatment	41
lithotripsy (stone fragmentation)	35
minimally invasive procedures	379
minor procedures	21
pelvic imaging	452
potassium test	33
preventive care	11
stent placement (stenting)	66
ultrasound (sonogram)	640
urologic procedures	895
vascular procedures	39

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	646
Female	246

**Ethnicity**
Non-Hispanic White	763
Black	23
Hispanic	72
Asian	19
Other	15
Native American	0

**Age**
From 65 to 74	387
From 75 to 84	300
85 and over	149
Less than 65	56

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2017

Hypertension	70
High Cholesterol	56
Stroke	7
Ischemic Heart Disease	39
Depression	19
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	19
Chronic Obstructive Pulmonary Disease	16
Diabetes	32
Dementia	15
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2018 were hormone therapy, injections, lab tests and urologic procedures.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	192
ablation	27
anorectal procedures	15
blood draw	215
catheterization	60
cryotherapy	15
cytology	63
diagnostic procedures	35
doctor visit	1473
hormone therapy	45183
hospital care	264
injections	45150
inpatient care	264
lab tests	1048
laser treatment	15
litholapaxy (stone fragmentation and removal)	17
lithotripsy (stone fragmentation)	23
minimally invasive procedures	351
minor procedures	20
neurostimulation	122
pelvic imaging	440
potassium test	27
stent placement (stenting)	36
ultrasound (sonogram)	610
urologic procedures	676
vascular procedures	41

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	539
Female	204

**Ethnicity**
Non-Hispanic White	628
Black	19
Hispanic	61
Asian	21
Other	14
Native American	0

**Age**
From 65 to 74	318
From 75 to 84	271
85 and over	111
Less than 65	43

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2018

Hypertension	69
High Cholesterol	64
Stroke	6
Ischemic Heart Disease	40
Depression	20
Chronic Kidney Disease	38
Asthma	10
Osteoperosis	8
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	33
Dementia	13
Cancer	20

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2019 were hormone therapy, injections, lab tests and urologic procedures.

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	129
ablation	32
blood draw	145
catheterization	45
cryotherapy	18
cytology	58
doctor visit	1148
foreign body removal	15
hormone therapy	40931
hospital care	307
injections	40901
inpatient care	307
lab tests	999
laser treatment	18
litholapaxy (stone fragmentation and removal)	20
lithotripsy (stone fragmentation)	21
minimally invasive procedures	202
pelvic imaging	380
potassium test	13
stent placement (stenting)	23
ultrasound (sonogram)	509
urologic procedures	649

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	470
Female	164

**Ethnicity**
Non-Hispanic White	536
Black	0
Hispanic	52
Asian	15
Other	17
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	246
85 and over	103
Less than 65	29

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2019

Hypertension	75
High Cholesterol	68
Stroke	8
Ischemic Heart Disease	40
Depression	18
Chronic Kidney Disease	40
Asthma	9
Osteoperosis	9
Atrial Fibrilation	15
Heart Failure	24
Chronic Obstructive Pulmonary Disease	16
Diabetes	35
Dementia	16
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2020 were hormone therapy, injections, lab tests and ultrasound (sonogram).

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	167
blood draw	110
chronic care	27
cytology	66
doctor visit	1041
foreign body removal	15
hormone therapy	36284
hospital care	285
injections	36251
inpatient care	285
lab tests	1043
lithotripsy (stone fragmentation)	14
minimally invasive procedures	156
pelvic imaging	299
stent placement (stenting)	24
ultrasound (sonogram)	466
urologic procedures	443

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	414
Female	157

**Ethnicity**
Non-Hispanic White	488
Black	13
Hispanic	44
Asian	13
Other	13
Native American	0

**Age**
From 65 to 74	253
From 75 to 84	215
85 and over	79
Less than 65	24

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2020

Hypertension	69
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	34
Depression	19
Chronic Kidney Disease	40
Asthma	8
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	14
Diabetes	34
Dementia	15
Cancer	19

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2021 were hormone therapy, injections, lab tests and ultrasound (sonogram).

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	227
blood draw	145
doctor visit	1460
foreign body removal	16
hormone therapy	38378
hospital care	201
injections	38341
inpatient care	201
lab tests	1181
litholapaxy (stone fragmentation and removal)	11
lithotripsy (stone fragmentation)	24
minimally invasive procedures	205
pelvic imaging	392
stent placement (stenting)	30
ultrasound (sonogram)	621
urologic procedures	554
vascular procedures	15

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	429
Female	178

**Ethnicity**
Non-Hispanic White	521
Black	11
Hispanic	43
Asian	12
Other	20
Native American	0

**Age**
From 65 to 74	275
From 75 to 84	216
85 and over	92
Less than 65	24

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2021

Hypertension	70
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	34
Depression	19
Chronic Kidney Disease	38
Asthma	8
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	22
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	13
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA during 2022 were hormone therapy, injections, lab tests and ultrasound (sonogram).

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

abdominal imaging	224
ablation	11
anorectal procedures	54
blood draw	130
catheterization	25
chronic care	56
diagnostic procedures	54
doctor visit	1695
hormone therapy	38471
hospital care	196
injections	38436
inpatient care	196
lab tests	1173
laser treatment	12
lithotripsy (stone fragmentation)	12
minimally invasive procedures	210
pelvic imaging	487
stent placement (stenting)	29
ultrasound (sonogram)	711
urologic procedures	697
vascular procedures	12

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	463
Female	184

**Ethnicity**
Non-Hispanic White	541
Black	16
Hispanic	53
Asian	15
Other	22
Native American	0

**Age**
From 65 to 74	261
From 75 to 84	257
85 and over	100
Less than 65	29

Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN in 2022

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	26
Asthma	14
Osteoperosis	15
Atrial Fibrilation	19
Heart Failure	17
Chronic Obstructive Pulmonary Disease	15
Diabetes	34
Dementia	9
Cancer	19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark B. Sender, MD, MDIN for Medicare patients.

The highest averages for the top procedures that Dr. Mark B. Sender, MD, MDIN treated as an urologist in Santa Clarita, CA were injections, hormone therapy, lab tests and urologic procedures.

abdominal imaging	249
ablation	40
anorectal procedures	44
blood draw	130
catheterization	59
chronic care	41
cryotherapy	33
cytology	52
diagnostic procedures	56
doctor visit	1362
foreign body removal	18
gastrointestinal procedures	11
hormone therapy	24550
hospital care	276
implant surgery	11
injections	26979
inpatient care	276
lab tests	995
laser treatment	32
litholapaxy (stone fragmentation and removal)	16
lithotripsy (stone fragmentation)	22
minimally invasive procedures	260
minor procedures	16
MRI (magnetic resonance imaging)	16
neurostimulation	122
neurostimulator lead placement	27
neurostimulator replacement	11
pelvic imaging	398
peripheral nerve stimulator replacement	11
potassium test	19
preventive care	19
stent placement (stenting)	34
ultrasound (sonogram)	604
urologic procedures	783
vascular procedures	70

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark B. Sender, MD, MDIN.

**Gender**
Male	453
Female	188

**Ethnicity**
Black / African American	14
Asian / Pacific Islander	12
Non-Hispanic White	541
Native American / Alaskan Native	0
Hispanic	54
Other	10

**Age**
75 to 84	220
85 and over	102
Less than 65	38
65 to 74	280

Average of Total of Conditions of Medicare patients treated by Dr. Mark B. Sender, MD, MDIN From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark B. Sender, MD, MDIN treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	64
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	34
Depression	17
Chronic Kidney Disease	31
Asthma	10
Osteoporosis	8
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Atrial Fibrillation	13
Dementia	13
Cancer	16

Education & Training

Dr. Mark B. Sender, MD, MDIN graduated from Emory University School of Medicine in 1981. He completed residency at Kaiser Sunset. He has a state license in California.

Medical School: Emory University School of Medicine (1981)

Residency: Kaiser Sunset

Licensed In: California

Affiliations & Hospitals

Dr. Mark B. Sender, MD, MDIN is associated with these hospitals and organizations:

Unio Specialty Care

Santa Clarita Urology Associates

Ratings & Reviews

Dr. Mark B. Sender, MD, MDIN has an exceptional overall rating with an average of 4.9 out of 5 stars based on 991 ratings. We collect ratings and reviews of Dr. Mark B. Sender, MD, MDIN from all over the web to help you find the right in Santa Clarita, CA.

4.9

Overall Rating

(991 Ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. Mark B. Sender, MD, MDIN. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Medtronic USA, Inc.	$7,670 Sacral Nerve Stimulation - Neuro $5,486	INTERSTIM $2,134	NURO $15	$35
SN Holdings, LLC	$3,125 $3,125
Coloplast Corp	$1,855 FEMALE INCONTINENCE $626	Pelvic Floor Repair $463	SPEEDICATH $451	PENILE RECONSTRUCTION $150	CONTINENCE CARE $110	Other $55
Cipla USA Inc.	$1,229 ZEMDRI (PLAZOMICIN) $1,051	$178
Astellas Pharma US Inc	$1,205 Myrbetriq $486	XTANDI $388	$330
Other	$8,624 BOTOX $840	PROVENGE $680	Lupron $650	XTANDI $632	TESTIM $277	Other $5,545

**Types of Payments**
Food and Beverage	$16,137
Travel and Lodging	$3,690
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$3,057
Education	$825

Ownership and Interest Payments

This table describes ownership payments received by Dr. Mark B. Sender, MD, MDIN.

UroGPO LLC	2020	$324,305.56	Physician Covered Recipient	Common Stock
UroGPO LLC	2017	$217,672.97	Physician Covered Recipient	Common Stock
SN Holdings, LLC	2022	$136,208.24	Physician Covered Recipient	Common Stock
SN Holdings, LLC	2021	$126,479.08	Physician Covered Recipient	Common Stock
UroGPO LLC	2019	$125,652.79	Physician Covered Recipient	Common Stock
UroGPO LLC	2018	$109,556.68	Physician Covered Recipient	Common Stock
UroGPO LLC	2016	$7,725.39	Physician Covered Recipient	Common Stock
UroGPO LLC	2015	$3,463.41	Physician Covered Recipient	Common Stock

Biography

Dr. Mark Sender is a specialist in urology (urinary tract disease) in Santa Clarita, CA and Newhall, CA. Patient ratings for Dr. Sender average 5.0 stars (out of 5). These areas are among his clinical interests: sacral nerve stimulation (SNS), prostate problems, and prosthetics. Dr. Sender attended medical school at Emory University School of Medicine. He has received the distinction of Southern California Super Doctors 2008. In addition to English, he speaks Spanish. Dr. Sender is affiliated with Unio Specialty Care.