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Home > CA Providers > Internists & Internal Medicine Doctors

Dr. Robert A. Gleser, MD

Accepting New Patients

(Dr. Robert Gleser, M.D.)

(13 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

University of the Witwatersrand, Johannesburg

651 First Street West Suite H
Sonoma, CA 95476

(707) 938-3870

Dr. Robert A. Gleser, MD is an internist in Sonoma, CA specializing in internal medicine (adult medicine). He graduated from University of the Witwatersrand, Johannesburg. Dr. Robert A. Gleser, MD is affiliated with Marin General Hospital and Hill Physicians.

Office Locations

651 First Street West Suite H
Sonoma, CA 95476

open_in_new

Hill Physicians

651 1st Street
West Ste H Sonoma, CA 95476

(707) 938-3870

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Noteworthy Medicare Patient Procedures Performed by Dr. Robert A. Gleser, MD in 2023

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

Top 10%

By Volume:

A1C test

preventive care

In 2023, Dr. Robert A. Gleser, MD performed more A1C test, and preventive care procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Volume:

flu shot

lab tests

urinalysis

In 2012, Dr. Robert A. Gleser, MD performed more flu shot, lab tests, and urinalysis 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. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2012 were ultrasound (sonogram), vascular procedures, lab tests and cardiac procedures.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

abdominal imaging	12
cardiac procedures	85
doctor visit	890
lab tests	131
pelvic imaging	12
preventive care	73
stress testing	50
ultrasound (sonogram)	199
vaccines	36
vascular procedures	151

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2013 were ultrasound (sonogram), hormone therapy, injections and vascular procedures.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

cardiac procedures	131
doctor visit	1287
ear procedures	17
hormone therapy	171
injections	171
lab tests	59
preventive care	28
stress testing	46
ultrasound (sonogram)	233
vaccines	11
vascular procedures	144

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	350
Female	293

**Ethnicity**
Non-Hispanic White	579
Black	0
Hispanic	20
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	407
From 75 to 84	156
85 and over	54
Less than 65	26

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2013

Hypertension	47
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	27
Depression	12
Chronic Kidney Disease	12
Asthma	5
Osteoperosis	4
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	11
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2014 were hormone therapy, injections, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

cardiac procedures	30
doctor visit	1162
hormone therapy	146
injections	146
lab tests	41
preventive care	32
removal of lesion (e.g. growth)	16
skin procedures	16
ultrasound (sonogram)	79
vascular procedures	49

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	334
Female	331

**Ethnicity**
Non-Hispanic White	604
Black	0
Hispanic	23
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	418
From 75 to 84	169
85 and over	48
Less than 65	30

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2014

Hypertension	40
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	23
Depression	12
Chronic Kidney Disease	11
Asthma	5
Osteoperosis	5
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	10
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2015 were hormone therapy, injections, preventive care and vaccines.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

diagnostic procedures	30
doctor visit	1506
ear procedures	46
hormone therapy	32806
injections	32806
lab tests	93
preventive care	207
vaccines	168

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	682
Female	768

**Ethnicity**
Non-Hispanic White	1288
Black	0
Hispanic	32
Asian	0
Other	84
Native American	0

**Age**
From 65 to 74	984
From 75 to 84	326
85 and over	78
Less than 65	62

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2015

Hypertension	40
High Cholesterol	44
Stroke	2
Ischemic Heart Disease	19
Depression	18
Chronic Kidney Disease	13
Asthma	7
Osteoperosis	4
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	13
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2016 were hormone therapy, injections, preventive care and vaccines.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

breathing treatment	11
doctor visit	1580
ear procedures	23
hormone therapy	22436
injections	22436
lab tests	114
preventive care	216
vaccines	198

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	330
Female	432

**Ethnicity**
Non-Hispanic White	685
Black	0
Hispanic	18
Asian	0
Other	39
Native American	0

**Age**
From 65 to 74	503
From 75 to 84	179
85 and over	51
Less than 65	29

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2016

Hypertension	41
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	13
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2017 were hormone therapy, injections, lab tests and preventive care.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

doctor visit	1465
hormone therapy	16641
injections	16641
lab tests	90
preventive care	45
vaccines	45

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	325
Female	372

**Ethnicity**
Non-Hispanic White	621
Black	0
Hispanic	13
Asian	0
Other	46
Native American	0

**Age**
From 65 to 74	463
From 75 to 84	182
85 and over	33
Less than 65	19

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2017

Hypertension	43
High Cholesterol	47
Stroke	2
Ischemic Heart Disease	26
Depression	15
Chronic Kidney Disease	17
Asthma	5
Osteoperosis	6
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	13
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2018 were lab tests, preventive care, vaccines and breast exam.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

breast exam	11
doctor visit	701
gynecologic procedures	11
lab tests	25
preventive care	21
vaccines	21

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	252
Female	220

**Ethnicity**
Non-Hispanic White	425
Black	0
Hispanic	0
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	292
From 75 to 84	138
85 and over	27
Less than 65	15

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2018

Hypertension	44
High Cholesterol	63
Stroke	3
Ischemic Heart Disease	30
Depression	16
Chronic Kidney Disease	18
Asthma	5
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	5
Diabetes	13
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

doctor visit	484

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	194
Female	86

**Ethnicity**
Non-Hispanic White	249
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	88
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2019

Hypertension	36
High Cholesterol	73
Stroke	0
Ischemic Heart Disease	26
Depression	16
Chronic Kidney Disease	14
Asthma	4
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	14
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2020 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

doctor visit	644
lab tests	17
preventive care	66
vaccines	66

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	146
Female	188

**Ethnicity**
Non-Hispanic White	304
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	114
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2020

Hypertension	48
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	5
Atrial Fibrilation	12
Heart Failure	15
Chronic Obstructive Pulmonary Disease	6
Diabetes	15
Dementia	12
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2021 were preventive care, vaccines, lab tests and diabetes management.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

diabetes management	36
doctor visit	1112
lab tests	78
preventive care	121
vaccines	85

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	172
Female	195

**Ethnicity**
Non-Hispanic White	337
Black	0
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	172
From 75 to 84	142
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2021

Hypertension	47
High Cholesterol	70
Stroke	7
Ischemic Heart Disease	26
Depression	23
Chronic Kidney Disease	19
Asthma	4
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	6
Diabetes	18
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA during 2022 were preventive care, lab tests, diabetes management and vaccines.

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

diabetes management	94
doctor visit	1376
lab tests	147
preventive care	169
vaccines	75

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Male	245
Female	303

**Ethnicity**
Non-Hispanic White	503
Black	0
Hispanic	11
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	237
From 75 to 84	223
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD in 2022

Hypertension	61
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	20
Depression	23
Chronic Kidney Disease	17
Asthma	8
Osteoperosis	13
Atrial Fibrilation	16
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	16
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Robert A. Gleser, MD for Medicare patients.

The highest averages for the top procedures that Dr. Robert A. Gleser, MD treated as an internist in Sonoma, CA were hormone therapy, injections, ultrasound (sonogram) and vascular procedures.

abdominal imaging	12
breast exam	11
cardiac procedures	82
diabetes management	65
diagnostic procedures	30
doctor visit	1109
ear procedures	28
gynecologic procedures	11
hormone therapy	14440
injections	14440
lab tests	79
pelvic imaging	12
preventive care	97
removal of lesion (e.g. growth)	16
skin procedures	16
stress testing	48
ultrasound (sonogram)	170
vaccines	78
vascular procedures	114

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Robert A. Gleser, MD.

**Gender**
Female	289
Male	275

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	508
Hispanic	10
Native American / Alaskan Native	0
Other	26

**Age**
85 and over	26
75 to 84	156
Less than 65	16
65 to 74	346

Average of Total of Conditions of Medicare patients treated by Dr. Robert A. Gleser, MD From 2012 - 2022

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

Hypertension	40
High Cholesterol	52
Stroke	2
Ischemic Heart Disease	22
Depression	15
Chronic Kidney Disease	14
Asthma	5
Osteoporosis	5
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	12
Atrial Fibrillation	8
Dementia	5
Cancer	9

Education & Training

Dr. Robert A. Gleser, MD graduated from University of the Witwatersrand, Johannesburg. He completed residency at Boston Medical Center. He is certified by the American Board of Internal Medicine - Internal Medicine and has a state license in Colorado.

Medical School: University of the Witwatersrand, Johannesburg

Residency: Boston Medical Center

Board Certification: American Board of Internal Medicine - Internal Medicine

Licensed In: Colorado

Affiliations & Hospitals

Dr. Robert A. Gleser, MD is associated with these hospitals and organizations:

Marin General Hospital

Hill Physicians

Ratings & Reviews

Dr. Robert A. Gleser, MD has a high overall rating with an average of 4.38 out of 5 stars based on 13 ratings. We collect ratings and reviews of Dr. Robert A. Gleser, MD from all over the web to help you find the right in Sonoma, CA.

4.38

Overall Rating

(13 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-06-11

Patient verified via Press Ganey

Dr. Gleser is an excellent, hands-on practitioner. He explained everything to me in great detail, answered all my questions, commented on my efforts related to my health and gave me additional suggestions, leaving it up to me to decide how to proceed.

Overall Rating: 5.0 2024-11-07

Patient verified via Press Ganey

Clear communications with a wrap up of items to follow up was good at the end of our session

Overall Rating: 5.0 2024-07-25

Patient verified via Press Ganey

Dr. Gleser is thorough/ caring/ very informed and easy to communicate with.

Overall Rating: 5.0 2024-11-16

Patient verified via Press Ganey

Dr Gleser always provides excellent care and advice

Overall Rating: 5.0 2025-09-06

Patient verified via Press Ganey

I have already recommended him! He is excellent!

Overall Rating: 5.0 2026-04-15

Patient verified via Press Ganey

Dr. Gleser is the best physician I've ever had.

Overall Rating: 5.0 2025-02-01

Patient verified via Press Ganey

Excellent service for entire visit

Overall Rating: 5.0 2026-03-27

Patient verified via Press Ganey

Dr. Gleser is a great doctor.

Overall Rating: 5.0 2025-08-30

Patient verified via Press Ganey

Great doctor

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$1,212 SYMBICORT $323	BYDUREON $243	CRESTOR $150	FARXIGA $143	ONGLYZA $88	Other $265
AbbVie, Inc.	$366 Synthroid $176	Androgel $142	Lupron $22	$26
FOREST PHARMACEUTICALS, INC.	$324 LINZESS $117	VIIBRYD $97	DALIRESP $60	BYSTOLIC $35	SAPHRIS $6	Other $9
Pfizer Inc.	$323 LYRICA $99	VIAGRA $80	COLOGUARD $43	CHANTIX $32	ELIQUIS $28	Other $41
Amgen Inc.	$304 Repatha $304
Other	$2,663 XARELTO $177	Brintellix $156	PRALUENT $142	VRAYLAR $126	BYSTOLIC $119	Other $1,944

**Types of Payments**
Food and Beverage	$5,130
Education	$62

Biography

Before completing his residency at Boston Medical Center, Dr. Robert Gleser attended medical school at the University of the Witwatersrand, Johannesburg. Dr. Gleser has a 4.5 out of 5 star average patient rating. His hospital/clinic affiliations include Marin General Hospital and Hill Physicians. He has an open panel in W Ste H Sonoma, CA according to Hill Physicians.