Updated October 2026

Gastroenterologists in Boston, MA

Gastroenterology
Boston, Massachusetts

Gastroenterologists: 243
Linked to a hospital or group: 194
Hospitals with a gastroenterologist: 33
Medical groups with a gastroenterologist: 39
Practice at a hospital: 187

There are 243 gastroenterologists in Boston. Massachusetts General Physicians Organization (MGPO) has the most, 76, and Brigham and Women's Hospital has the most affiliated gastroenterologists, 87. 30% finished medical school 30 or more years ago.

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Boston gastroenterologists, listed A to Z by last name

Each gastroenterologist on the list has gastroenterology as their primary specialty and a Boston practice address. The list shows the NPI, and how many hospitals and medical groups each one practices with. A free account names every hospital and group, with validated contacts.

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Boston gastroenterologists, A to Z
Gastroenterologist	Hospitals	Medical groups	Email and phone
Diane Renee Abraczinskas, MDNPI 1811988488	1 hospital	2 groups	Contacts
Lynne B. Ahn, MDNPI 1144269143	1 hospital	3 groups	Contacts
Hiroyuki Aihara, MDNPI 1619395795	3 hospitals	1 group	Contacts
Jessica R. Allegretti, MDNPI 1992932453	3 hospitals	1 group	Contacts
Harmony V. Allison, MDNPI 1245240704	1 hospital	2 groups	Contacts
Mohammad AlmeqdadiNPI 1114378387	2 hospitals	4 groups	Contacts
Ashwin N. Ananthakrishnan, MD, MPHNPI 1033292545	5 hospitals	2 groups	Contacts
Karin L. Andersson, MDNPI 1972585511	5 hospitals	2 groups	Contacts
Varun Teja Angajala, MDNPI 1962030940	1 hospital	2 groups	Contacts
Adjoa N. Anyane-YeboaNPI 1851666978	2 hospitals	4 groups	Contacts
Michael D. Apstein, MDNPI 1609854603	1 hospital	1 group	Contacts
Akwi Wasi Asombang, MDNPI 1679778765	2 hospitals	4 groups	Contacts
Uri Avissar, MDNPI 1134296064	1 hospital	3 groups	Contacts
Peter Alan Banks, MDNPI 1235188251	-	1 group	Contacts
Nir Mordechai Bar, MDNPI 1588330658	5 hospitals	2 groups	Contacts
Aymeric Becq, MDNPI 1861913881	-	-	Contacts
Tyler M. Berzin, MDNPI 1376597641	5 hospitals	2 groups	Contacts
Emily Dana Bethea, MDNPI 1972898021	5 hospitals	3 groups	Contacts
Irun Bhan, MDNPI 1376860833	4 hospitals	2 groups	Contacts
Rohini Vij Bhatia, MDNPI 1821173436	3 hospitals	2 groups	Contacts
Charles M. Bliss Jr., MDNPI 1740266477	1 hospital	3 groups	Contacts
Richard Steven Blumberg, MDNPI 1427002286	-	-	Contacts
Vlaicu Alin Botoman, MDNPI 1386670677	5 hospitals	2 groups	Contacts
William Robert Brugge, MDNPI 1104895994	3 hospitals	2 groups	Contacts
Cheryl Jean Bunker, MDNPI 1952384752	1 hospital	2 groups	Contacts
Kristin Elyse Burke, MDNPI 1861788523	4 hospitals	2 groups	Contacts
Valerie M. Byrnes, MDNPI 1467410332	-	-	Contacts
Jennifer X. Cai, MDNPI 1972833796	3 hospitals	1 group	Contacts
Martin Conrad Carey, MD, DSCNPI 1326004524	-	-	Contacts
Peter Joseph Carolan Jr., MDNPI 1659407427	5 hospitals	2 groups	Contacts
Brenna W. Casey, MDNPI 1730155698	1 hospital	2 groups	Contacts
Maria Andreea A. Catana, MDNPI 1215175211	3 hospitals	2 groups	Contacts
David R. Cave, MDNPI 1003898578	3 hospitals	1 group	Contacts
Andrew T. Chan, MDNPI 1982600144	4 hospitals	4 groups	Contacts
Suzanne S. Chan, MD, PhDNPI 1710272620	5 hospitals	3 groups	Contacts
Walter Wai-Yip Chan, MDNPI 1295875540	3 hospitals	1 group	Contacts
Adam S. Cheifetz, MDNPI 1811934417	2 hospitals	2 groups	Contacts
Daniel C. Chung, MDNPI 1710978994	5 hospitals	2 groups	Contacts
Raymond T. Chung, MDNPI 1154311769	5 hospitals	3 groups	Contacts
Ram Chuttani, MDNPI 1043258338	-	-	Contacts
David Earl Cohen, MD, PhDNPI 1881650133	1 hospital	2 groups	Contacts
Jonah Maxwell CohenNPI 1164748398	2 hospitals	3 groups	Contacts
Francis Paul Colizzo, MDNPI 1235105701	1 hospital	2 groups	Contacts
Kathleen Elizabeth Corey, MDNPI 1326174038	5 hospitals	2 groups	Contacts
Garret J. Cullen, MDNPI 1225268279	-	-	Contacts
Matthew J. CustodioNPI 1770042988	1 hospital	1 group	Contacts
Jacob Bruno DicksteinNPI 1861756165	-	-	Contacts
Julia Ding, MDNPI 1669901757	1 hospital	3 groups	Contacts
Michael Lawrence Dougan, MD, PhDNPI 1225322258	3 hospitals	2 groups	Contacts
Jonathan Michael Downie, MD, PhDNPI 1306305503	2 hospitals	3 groups	Contacts

Showing 1 to 50 of 220 Boston gastroenterologists

The list shows the 220 gastroenterologists with a public profile. The other 23 are counted in the total and searchable with a free account.

Sources: NPPES NPI Registry (CMS) and Dmand AI Affiliation Data

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Dmand AI has the EHR for 234 of 243 Boston gastroenterologists, at their hospital and their practice. Filter by Epic, Oracle Health, MEDITECH, athenahealth and more, then reach them with validated work emails and mobile numbers.

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Massachusetts General Physicians Organization (MGPO) has the most gastroenterologists in Boston, with 76

Massachusetts General Hospital is second with 75, and Brigham and Women's Hospital third with 53. Counts are gastroenterologists with a Massachusetts address linked to each group.

Medical groups with the most gastroenterologists in Boston
#	Medical group	Parent organization	Gastroenterologists
1	Massachusetts General Physicians Organization (MGPO)Boston	Parent on file	76
2	Massachusetts General HospitalBoston	Parent on file	75
3	Brigham and Women's HospitalBoston	Parent on file	53
4	Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP)Boston	Parent on file	35
5	Beth Israel Deaconess Medical CenterBoston	Parent on file	25
6	Boston University Medical Group (Boston University Internal Medicine Associates)Boston	Parent on file	16
7	Pratt Medical Group, Inc. - General Medical Associates (General Internal Medicine)Boston	Parent on file	13
8	Cape Cod HealthcareHyannis	Parent on file	5
9	Harbor Medical AssociatesSouth Weymouth	Parent on file	4
10	Emerson HealthConcord	Parent on file	4

Top 10 of 39 Boston medical groups with a gastroenterologist

Sources: Dmand AI Affiliation Data and Dmand AI Org Hierarchy Data

Brigham and Women's Hospital has the most affiliated gastroenterologists in Boston, with 87

Massachusetts General Hospital is second with 85, and Salem Hospital third with 41. Boston gastroenterologists are affiliated with 33 hospitals in all.

Hospitals with the most gastroenterologists in Boston
#	Hospital	Health system	Gastroenterologists
1	Brigham and Women's HospitalBoston	Mass General Brigham	87
2	Massachusetts General HospitalBoston	Mass General Brigham	85
3	Salem HospitalSalem	Mass General Brigham	41
4	Beth Israel Deaconess Medical CenterBoston	Beth Israel Lahey Health	40
5	Newton-Wellesley HospitalNewton	Mass General Brigham	34
6	Brigham and Women's Faulkner HospitalJamaica Plain	Mass General Brigham	33
7	Tufts Medical CenterBoston	Tufts Medicine	21
8	Beth Israel Deaconess Hospital-NeedhamNeedham	Beth Israel Lahey Health	20
9	Dana-Farber Cancer InstituteBoston	Dana-Farber Cancer Institute	18
10	Boston Medical CenterBoston	Boston Medical Center Health System	17

Top 10 of 33 Boston hospitals with an affiliated gastroenterologistAll 14 Boston hospitals

See every hospital and group for each Boston gastroenterologist

Each public profile names one place a gastroenterologist practices. A free account shows all of them, with the employer, the EHR and validated contacts.

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Source: Dmand AI Affiliation Data

Most Boston gastroenterologists practice at a hospital: 187 of the 191 with a mapped site

65 also practice at fqhcs, and 49 at a medical group site. A gastroenterologist can practice at several kinds of site, so the shares overlap.

Boston gastroenterologists by site of care

Hospitals18798%
FQHCs6534%
Medical group practices4926%
Imaging centers2010%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

30% of Boston gastroenterologists finished medical school 30 or more years ago

54 of the 182 Boston gastroenterologists with a graduation year on file. 25 graduated in the last 10 years, fewer than graduated 40 or more years ago.

Physicians by years since medical school

Under 10 years ago2514%
10 to 19 years ago6536%
20 to 29 years ago3821%
30 to 39 years ago2614%
40 or more years ago2815%

Source: Dmand AI Professional Profile Data

Every Boston gastroenterologist profile shows current hospitals and groups, Medicare activity and NPI details

Primary practiceThe main place they practice, with its type and cityOn every profile
Every site of careEach hospital, clinic and group where they practice nowWith a free account
EmployerThe organization they work for, when one is on fileWith a free account
Medicare servicesServices and procedure codes billed to Medicare, from CMSOn every profile
Medicare Part D prescribingClaims and drug costs from Part D, from CMSOn every profile
Industry paymentsPayments from drug and device makers, from CMS Open PaymentsOn every profile
Publications and clinical trialsResearch papers and trials linked to the NPI, when on fileOn every profile
Licenses and graduation yearState license numbers and medical school graduation yearOn every profile
NPI detailsNPI, enumeration date, primary taxonomy and practice addressOn every profile
Work email and mobile numberFound on request through healthcare waterfall enrichment, then validatedWith a free account
EHR in useThe EHR at each site where they practiceWith a free account
Colleagues at each siteThe clinicians they work with at each hospital and groupWith a free account

Free account: 30 days free, self-serve, no credit card.

Sources: NPPES NPI Registry (CMS), Medicare Physician & Other Practitioners (CMS), Open Payments (CMS) and Dmand AI Affiliation Data

Sources for the Boston gastroenterologist directory

Sources for the data on this page
Data on this page	Source
HCPs, types and specialties	NPPES NPI Registry (CMS) and Dmand AI Professional Profile Data
Sites of care, hospitals and medical groups	Dmand AI Affiliation Data
Medical school graduation year	Dmand AI Professional Profile Data

Data last refreshed October 2026Report an inaccuracy Remove my information

Gastroenterologists are HCPs whose primary specialty is gastroenterology (taxonomy code 207RG0100X), with an active NPI and a Boston practice address.

FAQ

Frequently asked questions about gastroenterologists in Boston

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many gastroenterologists are in Boston?

243 gastroenterologists have an active NPI, a Boston practice address and gastroenterology (taxonomy code 207RG0100X) as their primary specialty. 194 of them are linked to a hospital or medical group.

Which Boston medical groups have the most gastroenterologists?

Massachusetts General Physicians Organization (MGPO), with 76, followed by Massachusetts General Hospital with 75 and Brigham and Women's Hospital with 53.

Which Boston hospitals have the most gastroenterologists?

Brigham and Women's Hospital, with 87 affiliated gastroenterologists, followed by Massachusetts General Hospital with 85 and Salem Hospital with 41.

What share of Boston gastroenterologists practice at a hospital?

187 of the 191 Boston gastroenterologists with a mapped site of care, or 98%, have a current hospital affiliation.

What is the taxonomy code for gastroenterology?

207RG0100X is the NPPES taxonomy code for gastroenterology. Sub-specialties with their own code are counted on their own lists.

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