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Dr. Mary K. Sidawy, MD

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(Dr. Mary Sidawy)

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Specializes in: Cytopathology

University of Aleppo Faculty of Medicine (1978)

Professional interests include: breast lift with implant, esophageal cancer, bone marrow biopsy, and more.

9000 Franklin Square Drive
Baltimore, MD 21237

(443) 777-7000

Dr. Mary K. Sidawy, MD is a cytopathologist in Washington, DC specializing in cytopathology. She graduated from University of Aleppo Faculty of Medicine in 1978 and has 48 years of experience. Dr. Mary K. Sidawy, MD is affiliated with MedStar Good Samaritan Hospital, MedStar Franklin Square Medical Center, MedStar Southern Maryland Hospital Center, MedStar Health, MedStar Washington Hospital Center, MedStar Georgetown University Hospital, MedStar Union Memorial Hospital, MedStar Montgomery Medical Center, MedStar Harbor Hospital and MedStar St. Mary s Hospital.

Office Locations

MedStar St. Mary s Hospital

3800 Reservoir Road NW
Washington, DC 20007

(202) 444-2000

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110 Irving Street Nw
Washington, DC 20010

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18101 Prince Philip Drive
Olney, MD 20832

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201 E University Parkway
Baltimore, MD 21218

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25500 Point Lookout Road
Leonardtown, MD 20650

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3001 S. Hanover Street
Baltimore, MD 21225

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5601 Loch Raven Boulevard
Baltimore, MD 21239

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7503 Surratts Road
Clinton, MD 20735

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MedStar St. Mary s Hospital

9000 Franklin Square Drive
Baltimore, MD 21237

(443) 777-7000

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Some issues Dr. Mary K. Sidawy, MD can help you with:

Breast Biopsy

Breast biopsy is a procedure where a small sample of tissue is collected from the breast for testing. A physician may prescribe a breast biopsy for a variety of reasons, but they are most frequently prescribed for a lump found in the breast. Biopsy samples extracted are examined by pathologists in a laboratory setting and are tested to determine if they are cancerous or benign, or indicative of some other condition. Depending on the lab results, physicians may prescribe additional treatment. Other circumstances which may prompt a breast biopsy include:

Mammograms that detect other unusual features in the chest, such as a cyst or calcium deposit
Breast scans or ultrasounds that display abnormalities
Nipple changes, such as scaling, crusting, or bloody discharge

Breast biopsies are collected through several different procedures and the specific type of biopsy that a patient receives depends on the size, location, and features of a breast lump or irregularity. The three main methods of collecting a breast biopsy include:

Fine needle aspiration (FNA biopsy), where a thin needle is directed into a breast lump or abnormality, extracting a small sample of tissue or liquid
Core needle biopsy (CNB biopsy), where a hollow needle is directed into a breast lump or abnormality, extracting cylinders of tissue called "cores"
Open (surgical) biopsy, where a breast lump is removed through an incision in the breast

Fine needle aspiration (FNA) and core needle biopsy (CNB) are sometimes image-guided, where a mammogram, ultrasound, or MRI helps direct the physician performing the needle extraction.

Fine needle aspiration, the most common biopsy method, generally requires few patient preparations. It is recommended patients avoid using lotion, deodorant, and perfume prior to their biopsy procedure. FNA biopsy is performed with local anesthesia (topical numbing cream) and typically has a quick recovery, but patients may experience soreness for a few days. Core needle biopsy extracts slightly more tissue than an FNA biopsy.

Open (surgical) biopsy is more invasive and requires general anesthesia, where patients are put to sleep during the procedure. Patients must fast prior to the surgery. After the biopsy is performed, patients are monitored in a recovery room for a time before being discharged, when they will need someone else to provide transportation.

Although some may consider breast biopsy to be a simple procedure, it can catch critical issues - particularly breast cancer - that impact wellness. If a breast biopsy reveals an underlying condition like life-threatening cancer, patients can receive the diagnosis and medical treatment that is necessary for their long-term health.

Enteroscopy

Enteroscopy visually examines the small bowel and identifies such issues as bleeding, tumors, polyps, ulcers, and swollen lymph nodes. Common reasons this exam may be ordered are abnormal X-ray results and unexplained diarrhea.

Enteroscopies may be used alone or in combination with other procedures. For example, if a doctor suspects malignancy (cancer) in the small bowel, she may use an enteroscope to take a sample of tissue from the small bowel and have it examined in a laboratory. If there is a blockage in the small intestine that cannot be surgically removed, an enteroscopy-guided stent placement may help relieve some of the symptoms associated with the obstruction. Enteroscopes may also be used to treat intestinal bleeding and remove abnormal growths like tumors and polyps, as well as foreign objects that might have found their way into the small bowel.

There are several ways to perform an enteroscopy:

Push enteroscopy involves the use of a long tube with a camera, called an enteroscope. Depending on the location of the problem, the enteroscope is either passed through the mouth or rectum. This technique is often used to detect and stop bleeding in the upper small intestine.
Balloon enteroscopy uses scopes that have tiny balloons at the tip. The balloons inflate and deflate to help make the passage of the scope into the small bowel easier. This method is used when there is a need to access and treat certain parts of the small intestine that push enteroscopy cannot reach.
Capsule enteroscopy involves swallowing a capsule with a tiny camera inside it. As the capsule travels through the small intestine, the camera records and sends images that are then downloaded and analyzed by the doctor. The capsule eventually leaves the body during bowel movement. If the doctor needs to visualize the entire small intestine, capsule enteroscopy is the only option. The only drawback to this technique is that it cannot be combined with any treatment.

Enteroscopy is typically performed at the doctor's office and takes about 20 to 30 minutes, but may take longer if combined with another procedure. Patients may have a sore throat for a few hours if the scope was inserted through the mouth. Normal activities may be resumed about 24 hours following enteroscopy.

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.

In The News

“Credit... Mary K. Sidawy/Georgetown University Hospital.”—"With a Tiny Bit of Cancer, Debate on How to Proceed (Published 2008)", New York Times, June 2008

Noteworthy Medicare Patient Procedures Performed by Dr. Mary K. Sidawy, MD in 2023

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

Top 5%

By Volume:

in situ hybridization

In 2023, Dr. Mary K. Sidawy, MD performed more in situ hybridization procedures for Medicare patients than 95% of providers in related specialties within District of Columbia.

Top 25%

By Affordability:

consultation

intraoperative pathology consultation

liquid-based cytology

non-gynecologic liquid-based cytology

In 2012, Dr. Mary K. Sidawy, MD had a list price for consultation, intraoperative pathology consultation, liquid-based cytology (ThinPrep), and non-gynecologic liquid-based cytology that was lower than the list prices billed to Medicare by 75% of providers in related specialties within District of Columbia. 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. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2012 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

aspiration	12
consultation	55
cytology	221
diagnostic procedures	12
lab tests	478
minimally invasive procedures	12
minor procedures	12
second opinions	19

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2013 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

consultation	55
cytology	199
lab tests	484
second opinions	25

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	268
Female	377

**Ethnicity**
Non-Hispanic White	377
Black	208
Hispanic	25
Asian	24
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	165
85 and over	56
Less than 65	100

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2013

Hypertension	75
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	39
Depression	26
Chronic Kidney Disease	36
Asthma	15
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	20
Diabetes	40
Dementia	9
Cancer	31

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2014 were lab tests, cytology, consultation and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

consultation	22
cytology	236
lab tests	423
second opinions	19

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	275
Female	315

**Ethnicity**
Non-Hispanic White	340
Black	178
Hispanic	26
Asian	30
Other	16
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	196
85 and over	42
Less than 65	79

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2014

Hypertension	75
High Cholesterol	63
Stroke	7
Ischemic Heart Disease	38
Depression	21
Chronic Kidney Disease	36
Asthma	11
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	28
Chronic Obstructive Pulmonary Disease	19
Diabetes	38
Dementia	9
Cancer	34

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2015 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	179
lab tests	205
second opinions	18

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	294
Female	536

**Ethnicity**
Non-Hispanic White	480
Black	266
Hispanic	0
Asian	0
Other	36
Native American	0

**Age**
From 65 to 74	422
From 75 to 84	256
85 and over	66
Less than 65	86

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2015

Hypertension	75
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	35
Depression	18
Chronic Kidney Disease	39
Asthma	17
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	25
Diabetes	32
Dementia	10
Cancer	47

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2016 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	183
lab tests	228
second opinions	28

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	173
Female	278

**Ethnicity**
Non-Hispanic White	255
Black	136
Hispanic	25
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	232
From 75 to 84	131
85 and over	31
Less than 65	57

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2016

Hypertension	71
High Cholesterol	58
Stroke	6
Ischemic Heart Disease	33
Depression	23
Chronic Kidney Disease	43
Asthma	24
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	19
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	12
Cancer	41

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2017 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	235
lab tests	440
second opinions	22

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	212
Female	352

**Ethnicity**
Non-Hispanic White	316
Black	188
Hispanic	20
Asian	24
Other	16
Native American	0

**Age**
From 65 to 74	260
From 75 to 84	193
85 and over	50
Less than 65	61

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2017

Hypertension	74
High Cholesterol	57
Stroke	9
Ischemic Heart Disease	36
Depression	25
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	27
Diabetes	37
Dementia	14
Cancer	56

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2018 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	225
lab tests	440
second opinions	16

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	307
Female	386

**Ethnicity**
Non-Hispanic White	390
Black	230
Hispanic	28
Asian	19
Other	26
Native American	0

**Age**
From 65 to 74	371
From 75 to 84	200
85 and over	56
Less than 65	66

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2018

Hypertension	74
High Cholesterol	59
Stroke	8
Ischemic Heart Disease	37
Depression	24
Chronic Kidney Disease	40
Asthma	11
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	23
Diabetes	34
Dementia	10
Cancer	46

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2019 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	246
lab tests	374
second opinions	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	247
Female	401

**Ethnicity**
Non-Hispanic White	323
Black	242
Hispanic	24
Asian	24
Other	35
Native American	0

**Age**
From 65 to 74	341
From 75 to 84	194
85 and over	52
Less than 65	61

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2019

Hypertension	75
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	42
Depression	28
Chronic Kidney Disease	45
Asthma	10
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	23
Chronic Obstructive Pulmonary Disease	23
Diabetes	38
Dementia	17
Cancer	51

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2020 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	189
lab tests	291
second opinions	24

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	168
Female	247

**Ethnicity**
Non-Hispanic White	224
Black	155
Hispanic	0
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	200
From 75 to 84	125
85 and over	38
Less than 65	52

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2020

Hypertension	75
High Cholesterol	64
Stroke	11
Ischemic Heart Disease	46
Depression	26
Chronic Kidney Disease	48
Asthma	11
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	27
Chronic Obstructive Pulmonary Disease	25
Diabetes	36
Dementia	16
Cancer	51

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2021 were lab tests, cytology and second opinions.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	167
lab tests	253
second opinions	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	160
Female	266

**Ethnicity**
Non-Hispanic White	245
Black	132
Hispanic	0
Asian	21
Other	0
Native American	0

**Age**
From 65 to 74	215
From 75 to 84	135
85 and over	27
Less than 65	49

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2021

Hypertension	73
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	44
Depression	25
Chronic Kidney Disease	42
Asthma	11
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	37
Dementia	13
Cancer	50

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC during 2022 were lab tests and cytology.

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

cytology	111
lab tests	249

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	147
Female	202

**Ethnicity**
Non-Hispanic White	194
Black	122
Hispanic	0
Asian	12
Other	0
Native American	0

**Age**
From 65 to 74	163
From 75 to 84	125
85 and over	21
Less than 65	40

Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	14
Ischemic Heart Disease	35
Depression	22
Chronic Kidney Disease	30
Asthma	13
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	35
Dementia	7
Cancer	49

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mary K. Sidawy, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mary K. Sidawy, MD treated as a cytopathologist in Washington, DC were lab tests, cytology, consultation and second opinions.

aspiration	12
consultation	44
cytology	199
diagnostic procedures	12
lab tests	351
minimally invasive procedures	12
minor procedures	12
second opinions	19

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mary K. Sidawy, MD.

**Gender**
Male	204
Female	305

**Ethnicity**
Black / African American	168
Asian / Pacific Islander	17
Non-Hispanic White	285
Native American / Alaskan Native	0
Hispanic	13
Other	11

**Age**
75 to 84	156
85 and over	39
Less than 65	59
65 to 74	254

Average of Total of Conditions of Medicare patients treated by Dr. Mary K. Sidawy, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mary K. Sidawy, MD treated were hypertension, high cholesterol, cancer and chronic kidney disease.

Hypertension	67
High Cholesterol	57
Stroke	7
Ischemic Heart Disease	35
Depression	21
Chronic Kidney Disease	36
Asthma	12
Osteoporosis	9
Heart Failure	21
Chronic Obstructive Pulmonary Disease	20
Diabetes	32
Atrial Fibrillation	11
Dementia	10
Cancer	41

Education & Training

Dr. Mary K. Sidawy, MD graduated from University of Aleppo Faculty of Medicine in 1978. She completed residency at American University of Beirut Medical Center. She is certified by the American Board of Pathology and has a state license in District of Columbia.

Medical School: University of Aleppo Faculty of Medicine (1978)

Residency: American University of Beirut Medical Center (1979)

Board Certification: American Board of Pathology

Licensed In: District of Columbia

Affiliations & Hospitals

Dr. Mary K. Sidawy, MD is associated with these hospitals and organizations:

MedStar Good Samaritan Hospital

MedStar Franklin Square Medical Center

MedStar Southern Maryland Hospital Center

MedStar Health

MedStar Washington Hospital Center

MedStar Georgetown University Hospital

MedStar Union Memorial Hospital

MedStar Montgomery Medical Center

MedStar Harbor Hospital

MedStar St. Mary s Hospital

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Mary K. Sidawy, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Roche Diagnostics Corporation	$77 MD HPV CTNG $36	BENCHMARK SPECIAL STAINS WASH II $25	TD VENTANA Primary Staining Instruments and Reagents $16
Merck Sharp & Dohme Corporation	$18 KEYTRUDA $18

**Types of Payments**
Food and Beverage	$96

Biography

Dr. Mary Sidawy's medical specialty is cytopathology. Dr. Sidawy's clinical interests include angiosarcoma, bone marrow aspiration, and diagnostic evaluation. She attended the University of Aleppo Faculty of Medicine for medical school and subsequently trained at Mallory Institute of Pathology, George Washington University Medical Center, and American University of Beirut Medical Center for residency. Dr. Sidawy (or staff) speaks the following languages: Arabic and French. Dr. Sidawy is professionally affiliated with MedStar Georgetown University Hospital, MedStar Southern Maryland Hospital Center, and MedStar Washington Hospital Center. She has an open panel in Washington, DC according to Doctor.com.