Updated October 2026

Critical care medicine (internal medicine) physicians in Boston, MA

Critical care medicine (internal medicine)
Boston, Massachusetts

Critical care medicine (internal medicine) physicians: 49
Linked to a hospital or group: 35
Hospitals with a critical care medicine (internal medicine) physician: 22
Medical groups with a critical care medicine (internal medicine) physician: 18
Practice at a hospital: 33

There are 49 critical care medicine (internal medicine) physicians in Boston. Massachusetts General Physicians Organization (MGPO) has the most, 15, and Massachusetts General Hospital has the most affiliated critical care medicine (internal medicine) physicians, 13. 22% finished medical school 30 or more years ago.

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Boston critical care medicine (internal medicine) physicians, listed A to Z by last name

Each critical care medicine (internal medicine) physician on the list has critical care medicine (internal medicine) 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 critical care medicine (internal medicine) physicians, A to Z
Critical care medicine (internal medicine) physician	Hospitals	Medical groups	Email and phone
Margaret B. Allison, MD, PhDNPI 1114447398	3 hospitals	3 groups	Contacts
Elias N. Baedorf Kassis, MDNPI 1225358799	2 hospitals	3 groups	Contacts
Edward A. Bittner, MD, PhDNPI 1215912456	2 hospitals	3 groups	Contacts
Leo A. Celi, MD, MPH, MSNPI 1629257878	1 hospital	2 groups	Contacts
Michael H. Cho, MDNPI 1750363990	4 hospitals	4 groups	Contacts
Haval Chweich, MDNPI 1841454493	2 hospitals	2 groups	Contacts
Alexandra Flather-Morgan Cist, MDNPI 1659344091	-	-	Contacts
Peter Fleck Clardy, MDNPI 1629000237	-	-	Contacts
Barbara Ann Cockrill Gootkind, MDNPI 1265417711	-	-	Contacts
Anna Condella, MDNPI 1124558374	4 hospitals	5 groups	Contacts
Paul Brian Dieffenbach, MDNPI 1376717348	1 hospital	1 group	Contacts
Jacqueline Dinh, MDNPI 1477180800	1 hospital	-	Contacts
Michael William Donnino, MDNPI 1174624357	-	4 groups	Contacts
Katherine A. Dudley, MDNPI 1245497619	4 hospitals	6 groups	Contacts
Scott Kenneth Epstein, MDNPI 1548254113	-	-	Contacts
Ming-Hui Fan, MDNPI 1063561694	3 hospitals	3 groups	Contacts
Catherine M. Fiore, MDNPI 1174028773	1 hospital	3 groups	Contacts
John Hopkins Fountain, MDNPI 1225590383	3 hospitals	3 groups	Contacts
Angela J. Frank, MDNPI 1720176654	5 hospitals	2 groups	Contacts
Fiona K. Gibbons, MDNPI 1720079288	5 hospitals	2 groups	Contacts
Xuan Han, MDNPI 1598179582	3 hospitals	1 group	Contacts
Margaret Mary Hayes, MDNPI 1659545960	1 hospital	2 groups	Contacts
Stephanie M. Hon, MDNPI 1942648746	3 hospitals	4 groups	Contacts
Timothy Laux, MDNPI 1629333752	1 hospital	3 groups	Contacts
Yann-Bor Lin, MDNPI 1659556991	6 hospitals	3 groups	Contacts
Alnardo De Jesus Lora, MDNPI 1700381142	-	3 groups	Contacts
Benjamin David Medoff, MDNPI 1720062300	3 hospitals	3 groups	Contacts
Walter Joseph O'Donnell, MDNPI 1356320758	6 hospitals	3 groups	Contacts
Alexander M. PettiNPI 1588195630	3 hospitals	3 groups	Contacts
Ioana R. Preston, MDNPI 1477581924	5 hospitals	1 group	Contacts
Elisabeth D. Riviello, MD, MPHNPI 1821297946	2 hospitals	2 groups	Contacts
Jonah Rubin, MDNPI 1922461672	1 hospital	2 groups	Contacts
Justin D. Salciccioli, MA, MBBSNPI 1407386659	2 hospitals	3 groups	Contacts
Richard Martin Schwartzstein, MDNPI 1417937608	1 hospital	1 group	Contacts
Raghu R. Seethala, MDNPI 1437317096	3 hospitals	9 groups	Contacts
Geoffrey Sheinfeld, MDNPI 1891736112	-	-	Contacts
Jennifer P. StevensNPI 1639379282	1 hospital	3 groups	Contacts
Christopher M. Worsham, MDNPI 1205179801	1 hospital	3 groups	Contacts
Rajesh Roy Zacharias, MDNPI 1952534364	3 hospitals	4 groups	Contacts
Jonathon B. Zeitler, MDNPI 1245818202	1 hospital	-	Contacts

The list shows the 40 critical care medicine (internal medicine) physicians with a public profile. The other 9 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 48 of 49 Boston critical care medicine (internal medicine) physicians, 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 critical care medicine (internal medicine) physicians in Boston, with 15

Massachusetts General Hospital is second with 15, and Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP) third with 12. Counts are critical care medicine (internal medicine) physicians with a Massachusetts address linked to each group.

Medical groups with the most critical care medicine (internal medicine) physicians in Boston
#	Medical group	Parent organization	Critical care medicine (internal medicine) physicians
1	Massachusetts General Physicians Organization (MGPO)Boston	Parent on file	15
2	Massachusetts General HospitalBoston	Parent on file	15
3	Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP)Boston	Parent on file	12
4	Beth Israel Deaconess Medical CenterBoston	Parent on file	8
5	Brigham and Women's HospitalBoston	Parent on file	7
6	Pratt Medical Group, Inc. - General Medical Associates (General Internal Medicine)Boston	Parent on file	5
7	Mount Auburn Professional ServicesCambridge	Parent on file	4
8	Cambridge Health AllianceCambridge	Parent on file	4
9	Lahey ClinicBurlington	Parent on file	3
10	Mass General Brigham (formerly North Shore Physicians Group)Somerville	Parent on file	3

Top 10 of 18 Boston medical groups with a critical care medicine (internal medicine) physician

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

Massachusetts General Hospital has the most affiliated critical care medicine (internal medicine) physicians in Boston, with 13

Beth Israel Deaconess Medical Center is second with 11, and Brigham and Women's Hospital third with 9. Boston critical care medicine (internal medicine) physicians are affiliated with 22 hospitals in all.

Hospitals with the most critical care medicine (internal medicine) physicians in Boston
#	Hospital	Health system	Critical care medicine (internal medicine) physicians
1	Massachusetts General HospitalBoston	Mass General Brigham	13
2	Beth Israel Deaconess Medical CenterBoston	Beth Israel Lahey Health	11
3	Brigham and Women's HospitalBoston	Mass General Brigham	9
4	Tufts Medical CenterBoston	Tufts Medicine	8
5	Salem HospitalSalem	Mass General Brigham	5
6	Lowell General HospitalLowell	Tufts Medicine	5
7	Massachusetts Eye and EarBoston	Mass General Brigham	5
8	Newton-Wellesley HospitalNewton	Mass General Brigham	5
9	Mount Auburn HospitalCambridge	Beth Israel Lahey Health	3
10	MelroseWakefield HospitalMelrose	Tufts Medicine	3

Top 10 of 22 Boston hospitals with an affiliated critical care medicine (internal medicine) physicianAll 14 Boston hospitals

See every hospital and group for each Boston critical care medicine (internal medicine) physician

Each public profile names one place a critical care medicine (internal medicine) physician 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 critical care medicine (internal medicine) physicians practice at a hospital: 33 of the 34 with a mapped site

10 also practice at fqhcs, and 8 at imaging centers. A critical care medicine (internal medicine) physician can practice at several kinds of site, so the shares overlap.

Boston critical care medicine (internal medicine) physicians by site of care

Hospitals3397%
FQHCs1029%
Imaging centers824%
Medical group practices515%

Sources: Dmand AI Affiliation Data and Dmand AI Practice Data

22% of Boston critical care medicine (internal medicine) physicians finished medical school 30 or more years ago

7 of the 32 Boston critical care medicine (internal medicine) physicians with a graduation year on file. 4 graduated in the last 10 years.

Physicians by years since medical school

Under 10 years ago413%
10 to 19 years ago1341%
20 to 29 years ago825%
30 to 39 years ago516%
40 or more years ago26%

Source: Dmand AI Professional Profile Data

Every Boston critical care medicine (internal medicine) physician 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 critical care medicine (internal medicine) physician 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

Critical care medicine (internal medicine) physicians are HCPs whose primary specialty is critical care medicine (internal medicine) (taxonomy code 207RC0200X), with an active NPI and a Boston practice address.

FAQ

Frequently asked questions about critical care medicine (internal medicine) physicians 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 critical care medicine (internal medicine) physicians are in Boston?

49 critical care medicine (internal medicine) physicians have an active NPI, a Boston practice address and critical care medicine (internal medicine) (taxonomy code 207RC0200X) as their primary specialty. 35 of them are linked to a hospital or medical group.

Which Boston medical groups have the most critical care medicine (internal medicine) physicians?

Massachusetts General Physicians Organization (MGPO), with 15, followed by Massachusetts General Hospital with 15 and Harvard Medical Faculty Physicians at Beth Israel Deaconess Medical Center (HMFP) with 12.

Which Boston hospitals have the most critical care medicine (internal medicine) physicians?

Massachusetts General Hospital, with 13 affiliated critical care medicine (internal medicine) physicians, followed by Beth Israel Deaconess Medical Center with 11 and Brigham and Women's Hospital with 9.

What share of Boston critical care medicine (internal medicine) physicians practice at a hospital?

33 of the 34 Boston critical care medicine (internal medicine) physicians with a mapped site of care, or 97%, have a current hospital affiliation.

What is the taxonomy code for critical care medicine (internal medicine)?

207RC0200X is the NPPES taxonomy code for critical care medicine (internal medicine). Sub-specialties with their own code are counted on their own lists.

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