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Home > MA Providers > Internists & Internal Medicine Doctors

Dr. Gail M. O'Brien, MD

(153 Ratings)

Specializes in: Internal Medicine (Adult Medicine) and Bariatric Medicine

Tufts University School of Medicine

Professional interests include: weight management, obesity

50 Staniford Street 4th Floor
Boston, MA 02114

(617) 726-4400

Dr. Gail M. O'Brien, MD is an internist in Boston, MA specializing in internal medicine (adult medicine) and bariatric medicine. She graduated from Tufts University School of Medicine. Dr. Gail M. O'Brien, MD is affiliated with Massachusetts General Hospital.

Office Locations

50 Staniford Street 4th Floor
Boston, MA 02114

(617) 726-4400

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55 Fruit Street
Boston, MA 02114

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	219

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	228

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	24
Female	34

**Age**
From 65 to 74	32
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2013

Hypertension	60
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	24
Depression	31
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	280

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	25
Female	39

**Age**
From 65 to 74	40
From 75 to 84	12
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2014

Hypertension	61
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	17
Depression	28
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	207

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	52
Female	76

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

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2015

Hypertension	66
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	20
Depression	31
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	94

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	33
Female	52

**Age**
From 65 to 74	35
From 75 to 84	22
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2017

Hypertension	53
High Cholesterol	29
Stroke	0
Ischemic Heart Disease	20
Depression	22
Chronic Kidney Disease	24
Asthma	0
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	13
Chronic Obstructive Pulmonary Disease	0
Diabetes	20
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	165

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	22
Female	105

**Ethnicity**
Non-Hispanic White	116
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	54
From 75 to 84	37
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2018

Hypertension	57
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	22
Depression	24
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	20
Atrial Fibrilation	14
Heart Failure	12
Chronic Obstructive Pulmonary Disease	0
Diabetes	17
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	209

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	16
Female	89

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

**Age**
From 65 to 74	44
From 75 to 84	25
85 and over	21
Less than 65	15

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2019

Hypertension	55
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	19
Depression	27
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	20

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	176

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	12
Female	68

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

**Age**
From 65 to 74	44
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2022

Hypertension	64
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	21
Depression	51
Chronic Kidney Disease	16
Asthma	24
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	163

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	15
Female	79

**Ethnicity**
Non-Hispanic White	76
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2023

Hypertension	73
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	23
Depression	51
Chronic Kidney Disease	15
Asthma	18
Osteoperosis	15
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	33
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	174

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	25
Female	65

**Ethnicity**
Non-Hispanic White	72
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	49
From 75 to 84	11
85 and over	0
Less than 65	30

Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD in 2024

Hypertension	66
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	27
Depression	39
Chronic Kidney Disease	16
Asthma	21
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	37
Dementia	0
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Gail M. O'Brien, MD for Medicare patients.

doctor visit	175

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Gail M. O'Brien, MD.

**Gender**
Male	20
Female	55

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	37
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	9
85 and over	1
Less than 65	4
65 to 74	39

Average of Total of Conditions of Medicare patients treated by Dr. Gail M. O'Brien, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Gail M. O'Brien, MD treated were hypertension, high cholesterol, depression and ischemic heart disease.

Hypertension	50
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	17
Depression	27
Chronic Kidney Disease	13
Asthma	6
Osteoporosis	6
Heart Failure	2
Chronic Obstructive Pulmonary Disease	0
Diabetes	15
Atrial Fibrillation	3
Cancer	3
Dementia	0

Education & Training

Dr. Gail M. O'Brien, MD graduated from Tufts University School of Medicine. She completed residency at University of Cincinnati Affiliated Hospitals. She is certified by the Internal Medicine, American Board of Internal Medicine and has a state license in Massachusetts.

Medical School: Tufts University School of Medicine

Residency: University of Cincinnati Affiliated Hospitals

Board Certification: Internal Medicine, American Board of Internal Medicine

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Gail M. O'Brien, MD is associated with these hospitals and organizations:

Massachusetts General Hospital

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. Gail M. O'Brien, MD appears to accept the following insurance providers: Harvard Pilgrim Health Care, MultiPlan, United Healthcare, Tufts Health Plan, Aetna, TRICARE, Medicare, Medicaid, Humana, Coventry, Cigna, Blue California, Beech Street, WellPoint, Medicare ACO, WellSense, Senior Whole Health, Fallon Health, Commonwealth Care Alliance, Blue Cross Blue Shield Medicare, Maine Community Health Options, Mass General Brigham Health Plan and MassHealth.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gail M. O'Brien, MD accepts the following insurance providers:

Harvard Pilgrim Health Care

MultiPlan

United Healthcare

Tufts Health Plan

Aetna

TRICARE

Medicare

Medicaid

Humana

Coventry

Cigna

Blue California

Beech Street

WellPoint

Medicare ACO

WellSense

Senior Whole Health

Fallon Health

Commonwealth Care Alliance

Blue Cross Blue Shield Medicare

Maine Community Health Options

Mass General Brigham Health Plan

MassHealth

Ratings & Reviews

Dr. Gail M. O'Brien, MD has an exceptional overall rating with an average of 4.65 out of 5 stars based on 153 ratings. We collect ratings and reviews of Dr. Gail M. O'Brien, MD from all over the web to help you find the right in Boston, MA.

4.65

Overall Rating

(153 Ratings)

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General Payments

These charts describe general payments received by Dr. Gail M. O'Brien, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
SANOFI PASTEUR INC.	$66 FLUZONE HIGH-DOSE $31	FLUZONE QUADRIVALENT $18	FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE $17
Novo Nordisk Inc	$47 Saxenda $33	Victoza $15
AbbVie, Inc.	$12 Synthroid $12

**Types of Payments**
Food and Beverage	$125

Biography

Dr. Gail O'Brien is rated highly by her patients. Her areas of expertise include obesity and weight management. Dr. O'Brien is professionally affiliated with Massachusetts General Hospital. She usually is in-network for Blue California, Coventry, and Viant, as well as other insurance carriers. Dr. O'Brien is a graduate of Tufts University School of Medicine. She trained at a hospital affiliated with the University of Cincinnati for her residency.