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Dr. Gilberto Sustache JR., MD

Accepting New Patients

(Dr. Gilberto Sustache, Jr. MD)

(No ratings)

Specializes in: Family Medicine

University of Massachusetts Medical School (2001)

65 Boston Post Road West Suite 100
Marlborough, MA 01752

(508) 422-4844

Dr. Gilberto Sustache JR., MD is a family medicine practitioner in Marlborough, MA specializing in family medicine. He graduated from University of Massachusetts Medical School in 2001 and has 25 years of experience. Dr. Gilberto Sustache JR., MD is affiliated with RELIANT MEDICAL GROUP INC.

Office Locations

65 Boston Post Road West Suite 100
Marlborough, MA 01752

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In The News

“MARLBOROUGH - The waiting room at Dr. Gilberto Sustache, Jr. s Marlborough office tells you everything you need to know about his practice.”—"With his innovative healthcare model, Dr. Sustache prioritizes patient connection", Community Advocate, August 2025

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	510

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2013 were preventive care and vaccines.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	459
preventive care	17
vaccines	17

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	105
Female	89

**Ethnicity**
Non-Hispanic White	138
Black	0
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	56
85 and over	12
Less than 65	22

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2013

Hypertension	54
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	12
Chronic Kidney Disease	11
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	0
Diabetes	21
Dementia	8
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2014 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	462
ear procedures	15
lab tests	18
preventive care	38
vaccines	25

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	113
Female	90

**Ethnicity**
Non-Hispanic White	146
Black	0
Hispanic	27
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	63
85 and over	18
Less than 65	17

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2014

Hypertension	52
High Cholesterol	41
Stroke	6
Ischemic Heart Disease	26
Depression	10
Chronic Kidney Disease	16
Asthma	0
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	27
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2015 were preventive care, anorectal procedures and ear procedures.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

anorectal procedures	22
doctor visit	445
ear procedures	15
preventive care	22

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	234
Female	188

**Ethnicity**
Non-Hispanic White	300
Black	48
Hispanic	50
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	220
From 75 to 84	132
85 and over	26
Less than 65	44

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2015

Hypertension	45
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	24
Depression	13
Chronic Kidney Disease	16
Asthma	0
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	27
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2016 were lab tests.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	478
lab tests	22

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	118
Female	97

**Ethnicity**
Non-Hispanic White	149
Black	24
Hispanic	30
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	78
85 and over	12
Less than 65	16

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2016

Hypertension	54
High Cholesterol	37
Stroke	5
Ischemic Heart Disease	26
Depression	11
Chronic Kidney Disease	13
Asthma	7
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2017 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	428
lab tests	20
preventive care	35
vaccines	23

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	124
Female	96

**Ethnicity**
Non-Hispanic White	154
Black	24
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	66
85 and over	14
Less than 65	15

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2017

Hypertension	50
High Cholesterol	21
Stroke	0
Ischemic Heart Disease	25
Depression	8
Chronic Kidney Disease	18
Asthma	0
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	7
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2018 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	399
ear procedures	12
lab tests	16
preventive care	18
vaccines	18

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	119
Female	78

**Ethnicity**
Non-Hispanic White	133
Black	23
Hispanic	26
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	63
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2018

Hypertension	57
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	27
Depression	9
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	8
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2019 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	474
lab tests	17
preventive care	21
vaccines	21

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	137
Female	83

**Ethnicity**
Non-Hispanic White	152
Black	27
Hispanic	25
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	58
85 and over	15
Less than 65	13

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2019

Hypertension	58
High Cholesterol	38
Stroke	5
Ischemic Heart Disease	25
Depression	10
Chronic Kidney Disease	22
Asthma	7
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	30
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2020 were preventive care, vaccines, lab tests and ear procedures.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	331
ear procedures	12
lab tests	12
preventive care	41
vaccines	41

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	145
Female	100

**Ethnicity**
Non-Hispanic White	169
Black	29
Hispanic	24
Asian	11
Other	12
Native American	0

**Age**
From 65 to 74	159
From 75 to 84	60
85 and over	15
Less than 65	11

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2020

Hypertension	53
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	7
Chronic Kidney Disease	20
Asthma	4
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2021 were preventive care and vaccines.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	467
preventive care	35
vaccines	22

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	162
Female	94

**Ethnicity**
Non-Hispanic White	188
Black	21
Hispanic	23
Asian	11
Other	13
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	63
85 and over	21
Less than 65	11

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2021

Hypertension	59
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	23
Depression	9
Chronic Kidney Disease	18
Asthma	0
Osteoperosis	0
Atrial Fibrilation	9
Heart Failure	5
Chronic Obstructive Pulmonary Disease	5
Diabetes	26
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA during 2022 were preventive care and vaccines.

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

doctor visit	459
preventive care	24
vaccines	24

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	167
Female	98

**Ethnicity**
Non-Hispanic White	189
Black	21
Hispanic	23
Asian	18
Other	14
Native American	0

**Age**
From 65 to 74	173
From 75 to 84	58
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD in 2022

Hypertension	74
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	19
Depression	8
Chronic Kidney Disease	16
Asthma	5
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	28
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gilberto Sustache JR., MD for Medicare patients.

The highest averages for the top procedures that Dr. Gilberto Sustache JR., MD treated as a family medicine practitioner in Marlborough, MA were preventive care, vaccines, anorectal procedures and lab tests.

anorectal procedures	22
doctor visit	446
ear procedures	13
lab tests	17
preventive care	27
vaccines	23

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gilberto Sustache JR., MD.

**Gender**
Male	129
Female	92

**Ethnicity**
Black / African American	19
Asian / Pacific Islander	3
Non-Hispanic White	156
Hispanic	25
Native American / Alaskan Native	0
Other	3

**Age**
75 to 84	63
85 and over	12
Less than 65	13
65 to 74	127

Average of Total of Conditions of Medicare patients treated by Dr. Gilberto Sustache JR., MD From 2012 - 2022

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

Hypertension	50
High Cholesterol	35
Stroke	2
Ischemic Heart Disease	22
Depression	8
Chronic Kidney Disease	15
Asthma	2
Osteoporosis	1
Heart Failure	7
Chronic Obstructive Pulmonary Disease	4
Diabetes	24
Atrial Fibrillation	7
Cancer	8
Dementia	4

Education & Training

Dr. Gilberto Sustache JR., MD graduated from University of Massachusetts Medical School in 2001. He completed residency at Memorial Family Medicine Residency Program, Sugar Land. He is certified by the American Board of Family Medicine and has a state license in Massachusetts.

Medical School: University of Massachusetts Medical School (2001)

Residency: Memorial Family Medicine Residency Program, Sugar Land (2004)

Board Certification: American Board of Family Medicine

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Gilberto Sustache JR., MD is associated with these hospitals and organizations:

RELIANT MEDICAL GROUP INC

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General Payments

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

**Payments by Company**
Novo Nordisk Inc	$266 Xultophy 100/3.6 $67	Tresiba $48	Victoza $43	Ozempic $40	NovoLog $30	Other $37
AstraZeneca Pharmaceuticals LP	$184 FARXIGA $139	SYMBICORT $18	ONGLYZA $16	BYDUREON PEN $12
Abbott Laboratories	$180 Confirm Rx $115	Freestyle Libre 2 $50	FreeStyle Libre $15
Amgen Inc.	$153 Repatha $139	Prolia $13
GlaxoSmithKline, LLC.	$150 BREO $43	FLOVENT $41	VENTOLIN $20	PEDIARIX $16	BEXSERO $16	Other $14
Other	$1,166 NURTEC ODT $115	TOUJEO $105	RESONATE $103	XARELTO $82	XIFAXAN $76	Other $685

**Types of Payments**
Food and Beverage	$2,037
Education	$60

Biography

Dr. Gilberto Sustache is a specialist in family medicine in Marlborough, MA. He welcomes new patients at his office inMarlborough, MA as reported by Yext. Dr. Sustache attended the University of Massachusetts Medical School and subsequently trained at Memorial Family Medicine Residency Program, Sugar Land for residency. He is conversant in Spanish.