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Dr. Bonnie L. Balzer, MD

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Specializes in: Clinical Pathology

Stanford University School of Medicine

Professional interests include: thyroid cancer

4301 Northstar Way
Modesto, CA 95356

(209) 577-1200

Dr. Bonnie L. Balzer, MD is a clinical pathologist in San Francisco, CA specializing in clinical pathology. She graduated from Stanford University School of Medicine. Dr. Bonnie L. Balzer, MD is affiliated with Cedars-Sinai.

Office Locations

3700 California Street
San Francisco, CA 94118

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4301 Northstar Way
Modesto, CA 95356

(209) 577-1200

(209) 577-6517

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8700 Beverly Boulevard Suite 8718
Los Angeles, CA 90048

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Noteworthy Medicare Patient Procedures Performed by Dr. Bonnie L. Balzer, MD in 2023

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

Top 5%

By Volume:

intraoperative pathology consultation

In 2023, Dr. Bonnie L. Balzer, MD performed more intraoperative pathology consultation procedures for Medicare patients than 95% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2012 were lab tests, consultation, second opinions and cytology.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	95
cytology	45
gynecologic pathology	45
lab tests	827
second opinions	46

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2013 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	142
lab tests	830
second opinions	42

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	770
Female	719

**Ethnicity**
Non-Hispanic White	1158
Black	111
Hispanic	107
Asian	61
Other	0
Native American	0

**Age**
From 65 to 74	725
From 75 to 84	404
85 and over	200
Less than 65	160

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2013

Hypertension	66
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	44
Depression	25
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	22
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	10
Cancer	18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2014 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	194
lab tests	697
second opinions	18

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	899
Female	823

**Ethnicity**
Non-Hispanic White	1333
Black	125
Hispanic	122
Asian	87
Other	0
Native American	0

**Age**
From 65 to 74	806
From 75 to 84	491
85 and over	229
Less than 65	196

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2014

Hypertension	66
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	44
Depression	24
Chronic Kidney Disease	28
Asthma	10
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	23
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Dementia	10
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2015 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	228
lab tests	709
second opinions	34

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	2260
Female	2094

**Ethnicity**
Non-Hispanic White	3326
Black	314
Hispanic	358
Asian	188
Other	0
Native American	0

**Age**
From 65 to 74	2054
From 75 to 84	1272
85 and over	562
Less than 65	466

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2015

Hypertension	67
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	43
Depression	25
Chronic Kidney Disease	28
Asthma	11
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	22
Chronic Obstructive Pulmonary Disease	12
Diabetes	30
Dementia	10
Cancer	17

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2016 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	129
lab tests	483
second opinions	83

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	867
Female	740

**Ethnicity**
Non-Hispanic White	1215
Black	125
Hispanic	127
Asian	72
Other	68
Native American	0

**Age**
From 65 to 74	766
From 75 to 84	478
85 and over	196
Less than 65	167

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2016

Hypertension	67
High Cholesterol	58
Stroke	5
Ischemic Heart Disease	43
Depression	23
Chronic Kidney Disease	33
Asthma	15
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	12
Diabetes	32
Dementia	10
Cancer	20

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2017 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	143
lab tests	396
second opinions	50

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	561
Female	574

**Ethnicity**
Non-Hispanic White	851
Black	79
Hispanic	83
Asian	67
Other	0
Native American	0

**Age**
From 65 to 74	556
From 75 to 84	329
85 and over	131
Less than 65	119

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2017

Hypertension	69
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	45
Depression	28
Chronic Kidney Disease	36
Asthma	10
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	27
Chronic Obstructive Pulmonary Disease	13
Diabetes	36
Dementia	13
Cancer	21

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2018 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	125
lab tests	385
second opinions	50

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	610
Female	634

**Ethnicity**
Non-Hispanic White	954
Black	80
Hispanic	90
Asian	65
Other	0
Native American	0

**Age**
From 65 to 74	575
From 75 to 84	395
85 and over	153
Less than 65	121

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2018

Hypertension	65
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	44
Depression	25
Chronic Kidney Disease	33
Asthma	10
Osteoperosis	16
Atrial Fibrilation	10
Heart Failure	22
Chronic Obstructive Pulmonary Disease	10
Diabetes	31
Dementia	11
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2019 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	189
lab tests	581
second opinions	92

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	670
Female	675

**Ethnicity**
Non-Hispanic White	1012
Black	93
Hispanic	85
Asian	84
Other	0
Native American	0

**Age**
From 65 to 74	639
From 75 to 84	416
85 and over	172
Less than 65	118

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2019

Hypertension	67
High Cholesterol	64
Stroke	4
Ischemic Heart Disease	47
Depression	28
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	16
Atrial Fibrilation	11
Heart Failure	26
Chronic Obstructive Pulmonary Disease	11
Diabetes	30
Dementia	13
Cancer	19

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2020 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	138
lab tests	521
second opinions	78

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	780
Female	707

**Ethnicity**
Non-Hispanic White	1198
Black	84
Hispanic	85
Asian	0
Other	65
Native American	0

**Age**
From 65 to 74	678
From 75 to 84	488
85 and over	210
Less than 65	111

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2020

Hypertension	65
High Cholesterol	59
Stroke	4
Ischemic Heart Disease	46
Depression	24
Chronic Kidney Disease	36
Asthma	7
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	25
Chronic Obstructive Pulmonary Disease	11
Diabetes	32
Dementia	13
Cancer	18

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2021 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	110
lab tests	543
second opinions	48

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	949
Female	862

**Ethnicity**
Non-Hispanic White	1447
Black	81
Hispanic	121
Asian	82
Other	0
Native American	0

**Age**
From 65 to 74	835
From 75 to 84	590
85 and over	237
Less than 65	149

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2021

Hypertension	64
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	45
Depression	24
Chronic Kidney Disease	34
Asthma	7
Osteoperosis	15
Atrial Fibrilation	10
Heart Failure	24
Chronic Obstructive Pulmonary Disease	11
Diabetes	29
Dementia	13
Cancer	16

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2022 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	65
lab tests	744
second opinions	61

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	892
Female	757

**Ethnicity**
Non-Hispanic White	1333
Black	74
Hispanic	84
Asian	64
Other	94
Native American	0

**Age**
From 65 to 74	788
From 75 to 84	565
85 and over	215
Less than 65	81

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2022

Hypertension	72
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	39
Depression	21
Chronic Kidney Disease	22
Asthma	10
Osteoperosis	19
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	6
Cancer	23

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA during 2023 were lab tests, consultation and second opinions.

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

consultation	106
lab tests	637
second opinions	42

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	920
Female	762

**Ethnicity**
Non-Hispanic White	1367
Black	0
Hispanic	75
Asian	70
Other	107
Native American	0

**Age**
From 65 to 74	742
From 75 to 84	635
85 and over	230
Less than 65	75

Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD in 2023

Hypertension	70
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	39
Depression	20
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	20
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	6
Cancer	24

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Bonnie L. Balzer, MD for Medicare patients.

The highest averages for the top procedures that Dr. Bonnie L. Balzer, MD treated as a clinical pathologist in San Francisco, CA were lab tests, consultation, second opinions and cytology.

consultation	138
cytology	45
gynecologic pathology	45
lab tests	612
second opinions	53

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Bonnie L. Balzer, MD.

**Gender**
Male	848
Female	778

**Ethnicity**
Black / African American	97
Asian / Pacific Islander	70
Non-Hispanic White	1266
Hispanic	111
Native American / Alaskan Native	0
Other	27

**Age**
75 to 84	505
85 and over	211
Less than 65	146
65 to 74	763

Average of Total of Conditions of Medicare patients treated by Dr. Bonnie L. Balzer, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Bonnie L. Balzer, MD treated were hypertension, high cholesterol, ischemic heart disease and diabetes.

Hypertension	61
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	39
Depression	22
Chronic Kidney Disease	27
Asthma	8
Osteoporosis	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	10
Diabetes	28
Atrial Fibrillation	11
Cancer	17
Dementia	9

Education & Training

Dr. Bonnie L. Balzer, MD graduated from Stanford University School of Medicine. She completed residency at Barnes-Jewish Hospital. She is certified by the Dermatopathology, American Board of Pathology Pathology & Laboratory, American Board of Pathology Pathology - Anatomic/Pathology - Clinical, American Board of Pathology and has a state license in California.

Medical School: Stanford University School of Medicine

Residency: Barnes-Jewish Hospital

Board Certification: Dermatopathology, American Board of Pathology Pathology & Laboratory, American Board of Pathology Pathology - Anatomic/Pathology - Clinical, American Board of Pathology

Licensed In: California

Affiliations & Hospitals

Dr. Bonnie L. Balzer, MD is associated with these hospitals and organizations:

Cedars-Sinai

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General Payments

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

**Payments by Company**
Roche Molecular Systems, Inc.	$1,975 MD Virology $1,975
Ventana Medical Systems, Inc.	$1,526 BENCHMARK IHC/ISH PLATFORMS & REAGENTS $1,526
E.R. Squibb & Sons, L.L.C.	$1,512 $1,512
NanoString Technologies, Inc.	$41 PROSIGNA ASSAY $41

**Types of Payments**
Consulting Fee	$3,488
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$1,500
Food and Beverage	$67

Research Payments

Dr. Bonnie L. Balzer, MD has received 4 research payments totaling $32,165.

Biography

Dr. Bonnie Balzer's area of specialization is clinical pathology. She has a special interest in thyroid cancer. She is a graduate of Stanford University School of Medicine. Dr. Balzer completed her residency training at Barnes-Jewish Hospital and Stanford University Medical Center. She has received the following distinction: Southern California Super Doctors. She is professionally affiliated with Cedars-Sinai. Cedars-Sinai reports that Dr. Balzer is not accepting new patients.