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Dr. John Pieter Belzer, MD

Accepting New Patients

(Dr. John Belzer, M.D.)

(5 Ratings)

Specializes in: Sports Medicine and Orthopedics/Orthopedic Surgery

Yale School of Medicine

Professional interests include: shoulder replacement, elbow replacement, knee replacement, and more.

1099 D Street Suite 105
San Rafael, CA 94901

(415) 668-8010

Dr. John Pieter Belzer, MD is a sports medicine doctor in San Rafael, CA specializing in sports medicine and orthopedics/orthopedic surgery. He graduated from Yale School of Medicine. Dr. John Pieter Belzer, MD is affiliated with Sutter Health and Hill Physicians.

Office Locations

Hill Physicians

1099 D Street Suite 105
San Rafael, CA 94901

(415) 668-8010

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3838 California Street Suite 707
San Francisco, CA 94118

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In The News (see more mentions in the news)

“It's a "devastating blow," said Doctor John Belzer M.D., an orthopedic surgeon at California Pacific Orthopedics.”—"Former Warriors surgeon calls Klay's injury 'devastating blow,' but expects 'great things' after recovery", ABC7 News, November 2020

“I've never seen any literature to support that," Dr. John Belzer, a surgeon at California Pacific Orthopaedics, told ABC7 News. "”—"Can a calf injury make you susceptible to an Achilles injury? Former Warriors physician says no", ABC7 News, June 2019

“The second-year guard, who was examined by Dr. John Belzer in San Francisco, hurt himself when he fell onto the concrete floor after being fouled in Tuesday's exhibition against Lietuvos Rytas.”—"Warriors' shortage at point now acute", SFGATE, February 2012

Noteworthy Medicare Patient Procedures Performed by Dr. John Pieter Belzer, MD in 2023

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

Top 25%

By Volume:

replacement arthroplasty

total shoulder replacement

In 2012, Dr. John Pieter Belzer, MD performed more ankle MRI, hip MRI, joint imaging, knee MRI, knee X-ray, MRI (magnetic resonance imaging), replacement arthroplasty (joint replacement), and total shoulder replacement procedures for Medicare patients than 75% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2012 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	158
decompression surgery	20
doctor visit	643
injections	158
joint surgery	79
lower extremity surgery	19
minimally invasive procedures	36
musculoskeletal imaging	88
reconstructive surgery	43
upper extremity surgery	60
X-rays	88

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2013 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	199
decompression surgery	18
doctor visit	736
hip imaging	14
injections	199
joint surgery	74
lower extremity surgery	17
minimally invasive procedures	34
MRI (magnetic resonance imaging)	14
musculoskeletal imaging	151
reconstructive surgery	40
upper extremity surgery	57
X-rays	137

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	243
Female	300

**Ethnicity**
Non-Hispanic White	438
Black	21
Hispanic	27
Asian	37
Other	0
Native American	0

**Age**
From 65 to 74	299
From 75 to 84	153
85 and over	54
Less than 65	37

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2013

Hypertension	51
High Cholesterol	52
Stroke	5
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	15
Asthma	5
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	18
Dementia	6
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2014 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	258
decompression surgery	22
doctor visit	790
hip imaging	13
hospital care	12
injections	258
inpatient care	12
joint surgery	95
lower extremity surgery	26
minimally invasive procedures	41
MRI (magnetic resonance imaging)	13
musculoskeletal imaging	150
reconstructive surgery	54
upper extremity surgery	69
X-rays	137

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	259
Female	319

**Ethnicity**
Non-Hispanic White	485
Black	16
Hispanic	26
Asian	34
Other	17
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	179
85 and over	62
Less than 65	39

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2014

Hypertension	53
High Cholesterol	49
Stroke	4
Ischemic Heart Disease	24
Depression	17
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	8
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	19
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2015 were aspiration, injections, X-rays and musculoskeletal imaging.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	260
decompression surgery	23
doctor visit	864
injections	260
joint surgery	88
lower extremity surgery	28
minimally invasive procedures	45
musculoskeletal imaging	137
open surgery	15
reconstructive surgery	43
tendon surgery	15
upper extremity surgery	75
X-rays	137

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	526
Female	710

**Ethnicity**
Non-Hispanic White	1032
Black	26
Hispanic	34
Asian	80
Other	64
Native American	0

**Age**
From 65 to 74	644
From 75 to 84	366
85 and over	166
Less than 65	60

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2015

Hypertension	52
High Cholesterol	47
Stroke	6
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	17
Asthma	10
Osteoperosis	9
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	18
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2016 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	252
decompression surgery	22
doctor visit	848
hip imaging	18
injections	252
joint surgery	86
lower extremity surgery	27
minimally invasive procedures	42
MRI (magnetic resonance imaging)	18
musculoskeletal imaging	180
open surgery	18
reconstructive surgery	44
tendon surgery	18
upper extremity surgery	77
X-rays	162

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	258
Female	370

**Ethnicity**
Non-Hispanic White	518
Black	24
Hispanic	0
Asian	37
Other	28
Native American	0

**Age**
From 65 to 74	326
From 75 to 84	192
85 and over	76
Less than 65	34

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2016

Hypertension	55
High Cholesterol	45
Stroke	4
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	18
Asthma	12
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	18
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2017 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	271
decompression surgery	17
doctor visit	865
hip imaging	16
hospital care	11
injections	271
inpatient care	11
joint surgery	80
lower extremity surgery	21
minimally invasive procedures	33
MRI (magnetic resonance imaging)	16
musculoskeletal imaging	156
open surgery	12
reconstructive surgery	47
tendon surgery	12
upper extremity surgery	71
X-rays	140

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	281
Female	361

**Ethnicity**
Non-Hispanic White	516
Black	0
Hispanic	22
Asian	44
Other	40
Native American	0

**Age**
From 65 to 74	329
From 75 to 84	213
85 and over	70
Less than 65	30

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2017

Hypertension	51
High Cholesterol	38
Stroke	4
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	16
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2018 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	253
decompression surgery	16
doctor visit	863
hip imaging	24
hospital care	15
injections	253
inpatient care	15
joint surgery	103
lower extremity surgery	41
minimally invasive procedures	42
MRI (magnetic resonance imaging)	24
musculoskeletal imaging	181
open surgery	13
reconstructive surgery	61
tendon surgery	13
upper extremity surgery	75
X-rays	157

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	277
Female	366

**Ethnicity**
Non-Hispanic White	531
Black	19
Hispanic	0
Asian	37
Other	36
Native American	0

**Age**
From 65 to 74	303
From 75 to 84	228
85 and over	78
Less than 65	34

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2018

Hypertension	54
High Cholesterol	53
Stroke	4
Ischemic Heart Disease	26
Depression	21
Chronic Kidney Disease	21
Asthma	9
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	16
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2019 were musculoskeletal imaging, aspiration, injections and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	234
decompression surgery	16
doctor visit	902
hip imaging	47
hospital care	13
injections	234
inpatient care	13
joint surgery	80
lower extremity surgery	24
minimally invasive procedures	30
MRI (magnetic resonance imaging)	95
musculoskeletal imaging	282
open surgery	11
reconstructive surgery	50
tendon surgery	11
upper extremity surgery	67
X-rays	187

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	296
Female	364

**Ethnicity**
Non-Hispanic White	522
Black	0
Hispanic	23
Asian	50
Other	44
Native American	0

**Age**
From 65 to 74	339
From 75 to 84	222
85 and over	81
Less than 65	18

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2019

Hypertension	52
High Cholesterol	50
Stroke	3
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	18
Asthma	9
Osteoperosis	10
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	15
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2020 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	202
decompression surgery	16
doctor visit	712
hip imaging	39
hospital care	12
injections	202
inpatient care	12
joint surgery	71
lower extremity surgery	16
minimally invasive procedures	29
MRI (magnetic resonance imaging)	94
musculoskeletal imaging	197
open surgery	11
reconstructive surgery	42
tendon surgery	11
upper extremity surgery	66
X-rays	103

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	252
Female	301

**Ethnicity**
Non-Hispanic White	445
Black	15
Hispanic	18
Asian	35
Other	40
Native American	0

**Age**
From 65 to 74	306
From 75 to 84	186
85 and over	48
Less than 65	13

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2020

Hypertension	48
High Cholesterol	48
Stroke	2
Ischemic Heart Disease	26
Depression	19
Chronic Kidney Disease	16
Asthma	6
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	14
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2021 were aspiration, injections, musculoskeletal imaging and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	256
decompression surgery	14
doctor visit	740
hip imaging	42
hospital care	15
injections	256
inpatient care	15
joint surgery	62
lower extremity surgery	25
minimally invasive procedures	14
MRI (magnetic resonance imaging)	92
musculoskeletal imaging	228
reconstructive surgery	48
upper extremity surgery	37
X-rays	136

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	258
Female	329

**Ethnicity**
Non-Hispanic White	458
Black	13
Hispanic	34
Asian	40
Other	42
Native American	0

**Age**
From 65 to 74	292
From 75 to 84	229
85 and over	48
Less than 65	18

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2021

Hypertension	51
High Cholesterol	55
Stroke	2
Ischemic Heart Disease	24
Depression	17
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	13
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	4
Diabetes	14
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA during 2022 were musculoskeletal imaging, aspiration, injections and X-rays.

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

aspiration	227
decompression surgery	13
doctor visit	765
hip imaging	58
injections	227
joint surgery	87
lower extremity surgery	35
minimally invasive procedures	25
MRI (magnetic resonance imaging)	104
musculoskeletal imaging	298
reconstructive surgery	62
upper extremity surgery	52
X-rays	194

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	260
Female	368

**Ethnicity**
Non-Hispanic White	510
Black	0
Hispanic	21
Asian	35
Other	45
Native American	0

**Age**
From 65 to 74	292
From 75 to 84	260
85 and over	59
Less than 65	17

Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD in 2022

Hypertension	58
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	19
Depression	19
Chronic Kidney Disease	11
Asthma	9
Osteoperosis	19
Atrial Fibrilation	14
Heart Failure	6
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	4
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Pieter Belzer, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Pieter Belzer, MD treated as a sports medicine doctor in San Rafael, CA were aspiration, injections, musculoskeletal imaging and X-rays.

aspiration	233
decompression surgery	17
doctor visit	793
hip imaging	30
hospital care	13
injections	233
inpatient care	13
joint surgery	82
lower extremity surgery	25
minimally invasive procedures	33
MRI (magnetic resonance imaging)	52
musculoskeletal imaging	186
open surgery	13
reconstructive surgery	48
tendon surgery	13
upper extremity surgery	64
X-rays	143

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Pieter Belzer, MD.

**Gender**
Male	264
Female	344

**Ethnicity**
Black / African American	12
Asian / Pacific Islander	39
Non-Hispanic White	495
Native American / Alaskan Native	0
Hispanic	18
Other	32

**Age**
75 to 84	202
85 and over	67
Less than 65	27
65 to 74	311

Average of Total of Conditions of Medicare patients treated by Dr. John Pieter Belzer, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John Pieter Belzer, MD treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension	47
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	22
Depression	16
Chronic Kidney Disease	15
Asthma	7
Osteoporosis	10
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	14
Atrial Fibrillation	10
Dementia	6
Cancer	10

Education & Training

Dr. John Pieter Belzer, MD graduated from Yale School of Medicine. He completed residency at University of California, San Francisco (UCSF) Affiliated Hospitals. He is certified by the Orthopedic Surgery - American Board Certified and has a state license in California.

Medical School: Yale School of Medicine

Residency: University of California, San Francisco (UCSF) Affiliated Hospitals

Board Certification: Orthopedic Surgery - American Board Certified

Licensed In: California

Affiliations & Hospitals

Dr. John Pieter Belzer, MD is associated with these hospitals and organizations:

Sutter Health

Hill Physicians

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. John Pieter Belzer, MD appears to accept the following insurance providers: Cigna, Aetna, Blue Shield of California, UnitedHealthcare, SCAN Health Plan, Anthem, Health Net, Hill Physicians Care Solutions, Western Health Advantage (WHA), Central Health Plan, CCHP Health Plan (Chinese Community Health Plan) and Canopy Health.

Insurance Accepted by Provider includes:

According to our sources, Dr. John Pieter Belzer, MD accepts the following insurance providers:

Cigna

Aetna

Blue Shield of California

UnitedHealthcare

SCAN Health Plan

Anthem

Health Net

Hill Physicians Care Solutions

Western Health Advantage (WHA)

Central Health Plan

CCHP Health Plan (Chinese Community Health Plan)

Canopy Health

Ratings & Reviews

Dr. John Pieter Belzer, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. John Pieter Belzer, MD from all over the web to help you find the right in San Rafael, CA.

Overall Rating

(5 Ratings)

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General Payments

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

**Payments by Company**
Stryker Corporation	$2,923 BLUEPRINT PATIENT SPECIFIC INSTRUMENTATION $2,887	Gamma $36
Tornier, Inc.	$1,897 UE - Aequalis Ascend Flex $1,750	UE - Simpliciti $147
Arthrex, Inc.	$1,492 ALL ARTHREX PRODUCT LINES $398	$1,093
Smith & Nephew, Inc.	$288 Regeneten $170	Recon Knees $118
Rotation Medical, Inc.	$192 Rotation Medical Arthroscopic Instrument Kit $192
Other	$636 Phaco Tubing and Accessories $136	CORI $50	Advanced Wound care $48	NAVIO $34	OFIRMEV $34	Other $334

**Types of Payments**
Travel and Lodging	$3,109
Food and Beverage	$2,556
Consulting Fee	$1,750
Gift	$12

Research Payments

Dr. John Pieter Belzer, MD has received 1 research payments totaling $131.

Biography

Dr. John Belzer works as an orthopedics/orthopedic surgery and sports medicine. His areas of expertise consist of meniscus repair, knee replacement, and rotator cuff surgery. Patients rated Dr. Belzer highly, giving him an average of 5.0 stars (out of 5). He seems to honor Blue Shield, Health Net, Anthem, and more. After attending Yale School of Medicine, he completed his residency training at a hospital affiliated with the University of California, San Francisco (UCSF). Dr. Belzer (or staff) speaks the following languages: Filipino, Spanish, and French. He is professionally affiliated with Hill Physicians and Sutter Health. Hill Physicians reports that he is accepting new patients at his office in San Francisco, CA.