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Home > CA Providers > Internists & Internal Medicine Doctors

Dr. Patrick S. Chang, MD

(3 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

10535 Hospital Way
Mather, CA 95655

(916) 843-7000

Dr. Patrick S. Chang, MD is an internist in Mather, CA specializing in internal medicine (adult medicine).

Office Locations

10535 Hospital Way
Mather, CA 95655

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2012 were skin testing, allergy testing, preventive care and vaccines.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

allergy testing	1701
aspiration	25
doctor visit	3668
injections	25
musculoskeletal imaging	183
preventive care	283
removal of lesion (e.g. growth)	109
skin procedures	109
skin testing	1701
ultrasound (sonogram)	120
vaccines	267
vascular procedures	246
X-rays	183

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2013 were skin testing, allergy testing, vascular procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

allergy testing	960
aspiration	32
doctor visit	4002
injections	32
musculoskeletal imaging	271
preventive care	302
removal of lesion (e.g. growth)	137
skin procedures	137
skin testing	960
ultrasound (sonogram)	302
vaccines	284
vascular procedures	546
X-rays	271

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	298
Female	230

**Ethnicity**
Non-Hispanic White	457
Black	0
Hispanic	17
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	291
From 75 to 84	157
85 and over	59
Less than 65	21

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2013

Hypertension	70
High Cholesterol	73
Stroke	5
Ischemic Heart Disease	34
Depression	13
Chronic Kidney Disease	16
Asthma	20
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	75
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2014 were vascular procedures, ultrasound (sonogram), allergy testing and skin testing.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	246
allergy testing	640
aspiration	30
doctor visit	4256
injections	30
musculoskeletal imaging	254
pelvic imaging	218
preventive care	242
removal of lesion (e.g. growth)	122
skin procedures	122
skin testing	640
ultrasound (sonogram)	863
vaccines	224
vascular procedures	1042
X-rays	254

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	285
Female	213

**Ethnicity**
Non-Hispanic White	432
Black	14
Hispanic	0
Asian	30
Other	0
Native American	0

**Age**
From 65 to 74	259
From 75 to 84	156
85 and over	64
Less than 65	19

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2014

Hypertension	71
High Cholesterol	75
Stroke	23
Ischemic Heart Disease	35
Depression	11
Chronic Kidney Disease	20
Asthma	17
Osteoperosis	13
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	8
Diabetes	75
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2015 were vascular procedures, ultrasound (sonogram), allergy testing and skin testing.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	325
allergy testing	880
aspiration	23
doctor visit	4218
injections	23
musculoskeletal imaging	254
pelvic imaging	296
preventive care	290
removal of lesion (e.g. growth)	89
skin procedures	89
skin testing	880
ultrasound (sonogram)	966
vaccines	270
vascular procedures	1230
X-rays	254

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	558
Female	442

**Ethnicity**
Non-Hispanic White	866
Black	30
Hispanic	0
Asian	68
Other	0
Native American	0

**Age**
From 65 to 74	520
From 75 to 84	328
85 and over	122
Less than 65	30

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	18
Ischemic Heart Disease	35
Depression	14
Chronic Kidney Disease	27
Asthma	20
Osteoperosis	29
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	75
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2016 were vascular procedures, ultrasound (sonogram), abdominal imaging and pelvic imaging.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	354
aspiration	19
doctor visit	4422
injections	19
pelvic imaging	323
preventive care	291
removal of lesion (e.g. growth)	88
skin procedures	88
ultrasound (sonogram)	1036
vaccines	276
vascular procedures	1354

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	284
Female	239

**Ethnicity**
Non-Hispanic White	448
Black	15
Hispanic	0
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	175
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	33
Depression	11
Chronic Kidney Disease	31
Asthma	17
Osteoperosis	10
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	75
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2017 were vascular procedures, ultrasound (sonogram), allergy testing and skin testing.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	386
allergy testing	440
aspiration	14
doctor visit	4507
ear procedures	12
injections	14
pelvic imaging	350
preventive care	295
removal of lesion (e.g. growth)	78
skin procedures	78
skin testing	440
ultrasound (sonogram)	734
vaccines	283
vascular procedures	1044

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	279
Female	247

**Ethnicity**
Non-Hispanic White	449
Black	15
Hispanic	0
Asian	39
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	178
85 and over	64
Less than 65	11

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	32
Depression	10
Chronic Kidney Disease	75
Asthma	11
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	9
Diabetes	75
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2018 were vascular procedures, ultrasound (sonogram), preventive care and vaccines.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	107
doctor visit	3003
pelvic imaging	107
preventive care	181
removal of lesion (e.g. growth)	28
skin procedures	28
ultrasound (sonogram)	215
vaccines	181
vascular procedures	266

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	253
Female	197

**Ethnicity**
Non-Hispanic White	377
Black	15
Hispanic	0
Asian	37
Other	0
Native American	0

**Age**
From 65 to 74	223
From 75 to 84	168
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	36
Depression	12
Chronic Kidney Disease	75
Asthma	16
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	17
Chronic Obstructive Pulmonary Disease	9
Diabetes	75
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA during 2019 were ultrasound (sonogram), vascular procedures, pelvic imaging and abdominal imaging.

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

abdominal imaging	15
doctor visit	470
pelvic imaging	15
ultrasound (sonogram)	31
vascular procedures	31

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Male	133
Female	104

**Ethnicity**
Non-Hispanic White	198
Black	11
Hispanic	0
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	103
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD in 2019

Hypertension	72
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	32
Depression	16
Chronic Kidney Disease	75
Asthma	13
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	75
Dementia	9
Cancer	16

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2019

Volume of procedures performed by Dr. Patrick S. Chang, MD for Medicare patients.

The highest averages for the top procedures that Dr. Patrick S. Chang, MD treated as an internist in Mather, CA were allergy testing, skin testing, vascular procedures and ultrasound (sonogram).

abdominal imaging	238
allergy testing	924
aspiration	23
doctor visit	3568
ear procedures	12
injections	23
musculoskeletal imaging	240
pelvic imaging	218
preventive care	269
removal of lesion (e.g. growth)	93
skin procedures	93
skin testing	924
ultrasound (sonogram)	533
vaccines	255
vascular procedures	719
X-rays	240

Average Medicare Patient Data From 2012 - 2019

Information about Medicare patients treated by Dr. Patrick S. Chang, MD.

**Gender**
Female	209
Male	261

**Ethnicity**
Black / African American	12
Asian / Pacific Islander	32
Non-Hispanic White	403
Hispanic	2
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	38
75 to 84	158
Less than 65	10
65 to 74	242

Average of Total of Conditions of Medicare patients treated by Dr. Patrick S. Chang, MD From 2012 - 2019

The highest averages of the most common conditions of Medicare patients that Dr. Patrick S. Chang, MD treated were diabetes, high cholesterol, hypertension and chronic kidney disease.

Hypertension	64
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	29
Depression	10
Chronic Kidney Disease	39
Asthma	14
Osteoporosis	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	8
Diabetes	65
Atrial Fibrillation	10
Dementia	8
Cancer	10

Education & Training

He has a state license in Arizona.

Licensed In: Arizona

Ratings & Reviews

Dr. Patrick S. Chang, MD has an average of 2.33 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Patrick S. Chang, MD from all over the web to help you find the right in Mather, CA.

2.33

Overall Rating

(3 Ratings)

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General Payments

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

**Payments by Company**
Novo Nordisk Inc	$641 Tresiba $239	Victoza $197	NovoLog $120	Levemir $54	$31
GlaxoSmithKline, LLC.	$586 ANORO $169	BREO $154	INCRUSE $107	TANZEUM $48	FLOVENT $32	Other $77
AstraZeneca Pharmaceuticals LP	$542 FARXIGA $251	SYMBICORT $125	BYDUREON PEN $58	BYDUREON WEEKLY $34	ONGLYZA $14	Other $60
SANOFI-AVENTIS U.S. LLC	$535 TOUJEO $336	LANTUS $153	APIDRA $16	AFREZZA $15	SOLIQUA $15
Janssen Pharmaceuticals, Inc	$390 XARELTO $205	INVOKAMET $107	INVOKANA $63	$15
Other	$1,793 Myrbetriq $265	GLYXAMBI $100	ZERBAXA $100	Etrinsa $87	Prolia $84	Other $1,157