Doctors and health care providers in Boston, MA
41,865 individual NPPES records list a practice address in Boston, 1st of 406 Massachusetts cities. The largest group is students in training: 6,126, 15% of the city's records, against 5% across Massachusetts. Page 195 of 838.
The 8 largest groups in Boston
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Boston in Massachusetts
- Rank in Massachusetts1st of 406 cities by records
- Share of the state19.1% of Massachusetts's records
- Specialties present25 or more taxonomy codes
- Top three groups24.7% of all records
- Students in training rank1st of the 10 Massachusetts cities with the most
Compared with Massachusetts as a whole, Boston has 2.9× the state's share of student in an organized health care education/training program records and 0.23× its share of mental health counselor records.
Providers in Boston, alphabetically
- Alexis Dickinson, NPPsychiatric/Mental Health Nurse Practitioner1164099826
- Mark Dickinson, MDPediatrics Physician1154320059
- William Dickinson, M.D.Internal Medicine Physician1306341300
- Madison DickisonBehavior Technician1245954163
- Laura Dickman, LICSWClinical Social Worker1689169625
- Monica Dickmann, CRNACertified Registered Nurse Anesthetist1306416722
- John Dickson, M.D.,PH.D.Neurology Physician1912388174
- Justine Dickson, PHARMDPharmacist1538457247
- Aaron Dickstein, M.D.Gastroenterology Physician1003059239
- Jacob DicksteinGastroenterology Physician1861756165
- Laura Dicola, MDPsychiatry Physician1861841173
- Brianna DicristofaroOccupational Therapist1801506068
- Ryne Didier, MDPediatric Radiology Physician1104117209
- Dorothy Didomenico, FNP-BCFamily Nurse Practitioner1760024053
- Brendan Diederichs, MDDiagnostic Radiology Physician1316490410
- Stephen DiefenderferPhysician Assistant1497488704
- Paul Dieffenbach, M.D.Critical Care Medicine (Internal Medicine) Physician1376717348
- Brian Diehl, LICSWClinical Social Worker1245679372
- Maribeth Diener, RNRegistered Nurse1568930998
- Jules Dienstag, MDInternal Medicine Physician1710959390
- Bradford Diephuis, M.D.Internal Medicine Physician1730537424
- Gillian Diercks, M.D.Pediatric Otolaryngology Physician1255573515
- Kira Dies, SCMGenetic Counselor (M.S.)1710975644
- Samantha DietelBehavior Technician1609655125
- Laura Dietmann, PSYDClinical Psychologist1972040483
- Christopher DietrichStudent in an Organized Health Care Education/Training Program1255191409
- Jorg Dietrich, MD PHDNeurology Physician1407977473
- Isabelle Dieu, PHARMDPharmacist1528722832
- Emily DiezemannFamily Nurse Practitioner1821770165
- Liliana Difabio, DMDGeneral Practice Dentistry1790996940
- Paul Difanti, LMHCMental Health Counselor1336224294
- Rachel Difazio, NPPediatric Nurse Practitioner1609832260
- Michelle DifeliceMental Health Counselor1801440805
- Alyssa DifilippoNurse Practitioner1386362770
- Kathryn Difiore, NPAcute Care Nurse Practitioner1700308848
- Matthew Difrancesco, MDInternal Medicine Physician1861805855
- Emilia DifrancoStudent in an Organized Health Care Education/Training Program1801630702
- Alexandra Difulvio, DNPPsychiatric/Mental Health Nurse Practitioner1780316901
- Sarah Digeronimo, NP-CNurse Practitioner1750801460
- Christopher Digesu, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1164764338
- Stephen DiggsPhysician Assistant1063154128
- Anand Dighe, MD PHDAnatomic Pathology & Clinical Pathology Physician1427032341
- Erik Digiacomo, MDDiagnostic Radiology Physician1861123374
- Beth Digiammarino, NPGerontology Nurse Practitioner1477076461
- Donna Digioia, MDPsychiatry Physician1972593119
- Catherine Digiorgio, MDProcedural Dermatology Physician1952543506
- Christina Digiovanni, PA-CPhysician Assistant1104315993
- Madeline Digiovanni, MDStudent in an Organized Health Care Education/Training Program1972353902
- Sarah Digregorio, LICSWClinical Social Worker1669135430
- Subba Digumarthy, MDDiagnostic Radiology Physician1689623886
The largest Massachusetts cities
- Worcester13,166
- Springfield8,553
- Cambridge5,145
- Brockton4,287
- Milford3,459
How to read this directory
Boston, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 41,865 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in Boston - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a Boston practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.
The provider mix in Boston is weighted toward Student in an Organized Health Care Education/Training Program (6,126 clinicians, followed by Internal Medicine Physician with 2,320 and Clinical Social Worker with 1,906). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Massachusetts's population, Boston reports roughly 598 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.
Of Massachusetts's most common specialties, Counselor is the most prominent one with no provider currently listing a Boston practice address, a coverage gap Boston patients typically fill by traveling to a larger nearby hub.
For Boston patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.
For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.
Common questions
How many doctors are in Boston, MA?
There are 41,865 registered healthcare providers in Boston, MA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Boston?
The most common specialties in Boston are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Clinical Social Worker, Physician Assistant, Anesthesiology Physician. Student in an Organized Health Care Education/Training Program has the most providers with 6,126.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.