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Dr. Mary Ellen O'Brien, MD, MBA

(Dr. Mary Ellen O'Brien, M.D.)

(No ratings)

Specializes in: Internal Medicine (Adult Medicine) and Hospital Medicine (Hospitalist)
55 Fogg Road
Weymouth, MA 02190

Dr. Mary Ellen O'Brien, MD, MBA is an internist in Weymouth, MA specializing in internal medicine (adult medicine) and hospital medicine (hospitalist). Dr. Mary Ellen O'Brien, MD, MBA is affiliated with South Shore Health.

View Doctor's Full Profile (781) 624-8000

Office Locations

South Shore Health

55 Fogg Road
Weymouth, MA 02190
(781) 624-8000
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593 Eddy Street
Providence, RI 02903
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Noteworthy Medicare Patient Procedures Performed by Dr. Mary Ellen O'Brien, MD, MBA in 2023

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

Top 25%

By Volume:

inpatient hospital care

By Affordability:

same-day hospital care

In 2012, among providers in related specialties within Massachusetts, Dr. Mary Ellen O'Brien, MD, MBA performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and she also had a list price for same-day hospital care that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2012 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 831
inpatient care 591
outpatient care 191

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2013 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 635
inpatient care 484
outpatient care 151

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 287
Female 438
Ethnicity
Non-Hispanic White 696
Black 12
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 180
From 75 to 84 232
85 and over 200
Less than 65 113

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2013

Hypertension 75
High Cholesterol 67
Stroke 14
Ischemic Heart Disease 60
Depression 47
Chronic Kidney Disease 57
Asthma 15
Osteoperosis 14
Atrial Fibrilation 34
Heart Failure 53
Chronic Obstructive Pulmonary Disease 42
Diabetes 36
Dementia 28
Cancer 18

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2014 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 555
inpatient care 439
outpatient care 116

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 263
Female 392
Ethnicity
Non-Hispanic White 628
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 169
From 75 to 84 198
85 and over 195
Less than 65 93

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2014

Hypertension 75
High Cholesterol 67
Stroke 14
Ischemic Heart Disease 59
Depression 50
Chronic Kidney Disease 60
Asthma 15
Osteoperosis 15
Atrial Fibrilation 33
Heart Failure 55
Chronic Obstructive Pulmonary Disease 43
Diabetes 37
Dementia 28
Cancer 24

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 607
inpatient care 506
outpatient care 101

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 612
Female 868
Ethnicity
Non-Hispanic White 1424
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 346
From 75 to 84 512
85 and over 446
Less than 65 176

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2015

Hypertension 75
High Cholesterol 65
Stroke 16
Ischemic Heart Disease 57
Depression 44
Chronic Kidney Disease 59
Asthma 24
Osteoperosis 14
Atrial Fibrilation 36
Heart Failure 56
Chronic Obstructive Pulmonary Disease 41
Diabetes 39
Dementia 35
Cancer 21

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2016 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 552
inpatient care 415
outpatient care 126

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 261
Female 398
Ethnicity
Non-Hispanic White 623
Black 11
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 166
From 75 to 84 196
85 and over 217
Less than 65 80

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2016

Hypertension 75
High Cholesterol 68
Stroke 14
Ischemic Heart Disease 56
Depression 47
Chronic Kidney Disease 60
Asthma 42
Osteoperosis 16
Atrial Fibrilation 30
Heart Failure 50
Chronic Obstructive Pulmonary Disease 39
Diabetes 37
Dementia 36
Cancer 21

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 631
inpatient care 466
outpatient care 165

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 313
Female 376
Ethnicity
Non-Hispanic White 666
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 202
From 75 to 84 228
85 and over 184
Less than 65 75

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2017

Hypertension 75
High Cholesterol 66
Stroke 16
Ischemic Heart Disease 55
Depression 47
Chronic Kidney Disease 60
Asthma 13
Osteoperosis 12
Atrial Fibrilation 31
Heart Failure 49
Chronic Obstructive Pulmonary Disease 38
Diabetes 39
Dementia 36
Cancer 19

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 629
inpatient care 402
outpatient care 227

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 273
Female 391
Ethnicity
Non-Hispanic White 630
Black 11
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 152
From 75 to 84 262
85 and over 182
Less than 65 68

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2018

Hypertension 75
High Cholesterol 73
Stroke 15
Ischemic Heart Disease 53
Depression 46
Chronic Kidney Disease 56
Asthma 13
Osteoperosis 15
Atrial Fibrilation 32
Heart Failure 45
Chronic Obstructive Pulmonary Disease 36
Diabetes 36
Dementia 36
Cancer 20

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 704
inpatient care 425
outpatient care 240

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 334
Female 401
Ethnicity
Non-Hispanic White 688
Black 18
Hispanic 11
Asian 0
Other 0
Native American 0
Age
From 65 to 74 186
From 75 to 84 242
85 and over 221
Less than 65 86

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2019

Hypertension 75
High Cholesterol 75
Stroke 15
Ischemic Heart Disease 56
Depression 50
Chronic Kidney Disease 62
Asthma 11
Osteoperosis 15
Atrial Fibrilation 28
Heart Failure 46
Chronic Obstructive Pulmonary Disease 35
Diabetes 37
Dementia 36
Cancer 18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 554
inpatient care 355
outpatient care 199

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 235
Female 369
Ethnicity
Non-Hispanic White 564
Black 17
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 140
From 75 to 84 212
85 and over 185
Less than 65 67

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2020

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 58
Depression 54
Chronic Kidney Disease 63
Asthma 14
Osteoperosis 19
Atrial Fibrilation 27
Heart Failure 51
Chronic Obstructive Pulmonary Disease 35
Diabetes 36
Dementia 39
Cancer 21

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 661
inpatient care 417
outpatient care 228

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 262
Female 408
Ethnicity
Non-Hispanic White 637
Black 16
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 136
From 75 to 84 258
85 and over 232
Less than 65 44

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2021

Hypertension 75
High Cholesterol 75
Stroke 14
Ischemic Heart Disease 57
Depression 48
Chronic Kidney Disease 63
Asthma 12
Osteoperosis 20
Atrial Fibrilation 29
Heart Failure 47
Chronic Obstructive Pulmonary Disease 29
Diabetes 34
Dementia 42
Cancer 20

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 508
inpatient care 319
outpatient care 176

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 219
Female 297
Ethnicity
Non-Hispanic White 482
Black 0
Hispanic 0
Asian 0
Other 14
Native American 0
Age
From 65 to 74 103
From 75 to 84 182
85 and over 212
Less than 65 19

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2022

Hypertension 75
High Cholesterol 75
Stroke 27
Ischemic Heart Disease 47
Depression 42
Chronic Kidney Disease 53
Asthma 15
Osteoperosis 25
Atrial Fibrilation 41
Heart Failure 43
Chronic Obstructive Pulmonary Disease 30
Diabetes 34
Dementia 37
Cancer 31

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA during 2023 were hospital care and inpatient care.

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

hospital care 608
inpatient care 595

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Male 244
Female 369
Ethnicity
Non-Hispanic White 585
Black 0
Hispanic 0
Asian 0
Other 13
Native American 0
Age
From 65 to 74 90
From 75 to 84 248
85 and over 257
Less than 65 18

Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA in 2023

Hypertension 75
High Cholesterol 75
Stroke 26
Ischemic Heart Disease 45
Depression 42
Chronic Kidney Disease 46
Asthma 16
Osteoperosis 23
Atrial Fibrilation 43
Heart Failure 47
Chronic Obstructive Pulmonary Disease 32
Diabetes 35
Dementia 37
Cancer 29

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Mary Ellen O'Brien, MD, MBA for Medicare patients.

The highest averages for the top procedures that Dr. Mary Ellen O'Brien, MD, MBA treated as an internist in Weymouth, MA were hospital care, inpatient care and outpatient care.

hospital care 622
inpatient care 451
outpatient care 174

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA.

Gender
Female 392
Male 275
Ethnicity
Black / African American 7
Asian / Pacific Islander 0
Non-Hispanic White 635
Native American / Alaskan Native 0
Hispanic 0
Other 2
Age
75 to 84 230
85 and over 210
Less than 65 69
65 to 74 155

Average of Total of Conditions of Medicare patients treated by Dr. Mary Ellen O'Brien, MD, MBA From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Mary Ellen O'Brien, MD, MBA treated were hypertension, high cholesterol, chronic kidney disease and ischemic heart disease.

Hypertension 68
High Cholesterol 65
Stroke 15
Ischemic Heart Disease 50
Depression 43
Chronic Kidney Disease 53
Asthma 15
Osteoporosis 15
Heart Failure 45
Chronic Obstructive Pulmonary Disease 33
Diabetes 33
Atrial Fibrillation 30
Dementia 32
Cancer 20

Education & Training

She completed residency at The Miriam Hospital. She is certified by the Board Certification: Internal Medicine and has a state license in Rhode Island.

Residency: The Miriam Hospital

Board Certification: Board Certification: Internal Medicine

Licensed In: Rhode Island

Affiliations & Hospitals

Dr. Mary Ellen O'Brien, MD, MBA is associated with these hospitals and organizations:

South Shore Health

Ratings & Reviews

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Biography

Dr. Mary Ellen O'Brien is a specialist in hospital medicine (hospitalist). She is affiliated with South Shore Health. Dr. O'Brien trained at The Miriam Hospital and Rhode Island Hospital for residency.

Other Providers in Weymouth, MA