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Dr. Pieter A. Cohen, MD

Accepting New Patients

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Specializes in: Internal Medicine (Adult Medicine)

Yale School of Medicine

300 Broadway
Somerville, MA 02143

(617) 284-7500

Dr. Pieter A. Cohen, MD is an internist in Somerville, MA specializing in internal medicine (adult medicine). He graduated from Yale School of Medicine. Dr. Pieter A. Cohen, MD is affiliated with Cambridge Health Alliance.

Office Locations

300 Broadway
Somerville, MA 02143

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In The News (see more mentions in the news)

“High-dose zinc can interfere with copper absorption because the two nutrients are absorbed by the same part of the gut, according to Pieter Cohen, MD, an associate professor of medicine at Harvard...”—"4 supplement combos that are bad for your brain - and can lead to aging and memory issues", New York Post, February 2026

“Some people have vitamin or mineral deficiencies and rely on supplements to manage them, said Pieter Cohen, an internist at Cambridge Health Alliance who studies supplements.”—"What Doctors Want You to Know About Supplements", New York Times, January 2026

“Algunas personas tienen carencias de vitaminas o minerales y dependen de los suplementos para controlarlas, dijo Pieter Cohen, internista de la Cambridge Health Alliance quien estudia los...”—"Tomas suplementos? Los doctores quieren que sepas esto", New York Times, January 2026

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	179

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	167

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	55
Female	42

**Ethnicity**
Non-Hispanic White	66
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	0
85 and over	0
Less than 65	55

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2013

Hypertension	44
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	21
Depression	43
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	34
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	138

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	43
Female	42

**Ethnicity**
Non-Hispanic White	54
Black	0
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	27
From 75 to 84	0
85 and over	0
Less than 65	42

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2014

Hypertension	54
High Cholesterol	27
Stroke	0
Ischemic Heart Disease	24
Depression	39
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	0
Chronic Obstructive Pulmonary Disease	15
Diabetes	33
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	103

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	66
Female	64

**Ethnicity**
Non-Hispanic White	86
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	48
From 75 to 84	0
85 and over	0
Less than 65	58

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2015

Hypertension	57
High Cholesterol	26
Stroke	0
Ischemic Heart Disease	17
Depression	40
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	34
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	105

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	27
Female	36

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

**Age**
From 65 to 74	28
From 75 to 84	11
85 and over	0
Less than 65	24

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2016

Hypertension	46
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	22
Depression	35
Chronic Kidney Disease	27
Asthma	22
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	0
Diabetes	25
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	107

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	36
Female	45

**Ethnicity**
Non-Hispanic White	60
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	0
85 and over	0
Less than 65	35

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2017

Hypertension	51
High Cholesterol	28
Stroke	0
Ischemic Heart Disease	22
Depression	40
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	14
Heart Failure	15
Chronic Obstructive Pulmonary Disease	0
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	119

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	31
Female	35

**Ethnicity**
Non-Hispanic White	39
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	29
From 75 to 84	0
85 and over	0
Less than 65	21

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2018

Hypertension	47
High Cholesterol	26
Stroke	0
Ischemic Heart Disease	20
Depression	33
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	23
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	118

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	32
Female	37

**Ethnicity**
Non-Hispanic White	43
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	26
From 75 to 84	0
85 and over	0
Less than 65	28

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2019

Hypertension	54
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	0
Depression	42
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	30
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	92

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	40
Female	53

**Ethnicity**
Non-Hispanic White	51
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	43
From 75 to 84	0
85 and over	0
Less than 65	29

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2020

Hypertension	47
High Cholesterol	23
Stroke	0
Ischemic Heart Disease	19
Depression	43
Chronic Kidney Disease	31
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	0
Diabetes	34
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	88

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	45
Female	48

**Ethnicity**
Non-Hispanic White	58
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	45
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2021

Hypertension	47
High Cholesterol	31
Stroke	0
Ischemic Heart Disease	23
Depression	37
Chronic Kidney Disease	32
Asthma	13
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	15
Chronic Obstructive Pulmonary Disease	13
Diabetes	33
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	74

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Male	32
Female	33

**Ethnicity**
Non-Hispanic White	42
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	0
85 and over	0
Less than 65	15

Conditions of Medicare patients treated by Dr. Pieter A. Cohen, MD in 2022

Hypertension	63
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	18
Depression	37
Chronic Kidney Disease	23
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	18
Chronic Obstructive Pulmonary Disease	0
Diabetes	37
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Pieter A. Cohen, MD for Medicare patients.

doctor visit	117

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Pieter A. Cohen, MD.

**Gender**
Female	39
Male	37

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	48
Native American / Alaskan Native	0
Hispanic	7
Other	0

**Age**
85 and over	0
75 to 84	1
Less than 65	30
65 to 74	30

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

The highest averages of the most common conditions of Medicare patients that Dr. Pieter A. Cohen, MD treated were hypertension, depression, diabetes and high cholesterol.

Hypertension	46
High Cholesterol	25
Stroke	0
Ischemic Heart Disease	16
Depression	35
Chronic Kidney Disease	23
Asthma	3
Osteoporosis	0
Heart Failure	7
Chronic Obstructive Pulmonary Disease	2
Diabetes	28
Atrial Fibrillation	2
Dementia	0
Cancer	0

Education & Training

Dr. Pieter A. Cohen, MD graduated from Yale School of Medicine. He completed residency at Cambridge Hospital. He is certified by the Internal Medicine and has a state license in Massachusetts.

Medical School: Yale School of Medicine

Residency: Cambridge Hospital

Board Certification: Internal Medicine

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Pieter A. Cohen, MD is associated with these hospitals and organizations:

Cambridge Health Alliance

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Biography

Before performing his residency at Cambridge Hospital, Dr. Pieter Cohen attended Yale School of Medicine. He is conversant in Portuguese. Dr. Cohen is affiliated with Cambridge Health Alliance. According to Doctor.com, new patients are welcome to contact his office in Somerville, MA.