NPPES file of Aug 9, 2026

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 274 of 838.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

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

  1. Rennie Gilman, PT, DPTPhysical Therapist1164829305
  2. Sean Gilman, M.D.Pulmonary Disease Physician1003916065
  3. Allissia GilmartinClinical Genetics (M.D.) Physician1811524705
  4. Amanda GilmartinPhysician Assistant1639842289
  5. Geoffrey Gilmartin, M.D.Pulmonary Disease Physician1770572851
  6. Julie GilmerSpeech-Language Pathologist1568912681
  7. Krysta GilmetteBehavior Analyst1114630894
  8. James Gilmore, PHARMDPharmacist1922362136
  9. Julia Gilmore, PHDClinical Child & Adolescent Psychologist1255999710
  10. Molly Gilmore, CPNP-PCPediatric Nurse Practitioner1245807858
  11. William Gilmore, DMD, MSOral and Maxillofacial Surgery (Dentist)1952415655
  12. Bret GilmourStudent in an Organized Health Care Education/Training Program1568016954
  13. David Gilo, DMDGeneral Practice Dentistry1396946539
  14. Stuart Gilreath, MDInternal Medicine Physician1225651037
  15. Amanda Gilsdorf, NPFamily Nurse Practitioner1366023566
  16. Aidan GilsonStudent in an Organized Health Care Education/Training Program1184482796
  17. Andrew GilsonBehavior Technician1639663776
  18. Diane Gilworth, NPRegistered Nurse1013026236
  19. Barbara Gimbel, LCSWSocial Worker1922860196
  20. Michael Gimbrone, M.D.Anatomic Pathology Physician1619098779
  21. Alexander GimenoStudent in an Organized Health Care Education/Training Program1396683405
  22. Rebecca Gimeno, PHDClinical Psychologist1780177105
  23. Barjor GimiDiagnostic Radiology Physician1396319224
  24. Therese Gimler, NPRegistered Nurse1457487290
  25. Callie Ginapp, MDPsychiatry Physician1669175840
  26. Paul Ginart, MD, PHDEmergency Medicine Physician1437647179
  27. Curtis Ginder, MDCardiovascular Disease Physician1033609318
  28. Samuel Gingras, PA-CPhysician Assistant1295662856
  29. Melissa Ginnings, NPNurse Practitioner1922538123
  30. Katherine Ginnis, LICSWClinical Social Worker1477600575
  31. Leo Ginns, MDPulmonary Disease Physician1144211772
  32. Ariana Ginsberg, MDStudent in an Organized Health Care Education/Training Program1295595858
  33. Alexa GinsburgSpeech-Language Pathologist1699576272
  34. Elizabeth Ginsburg, MDReproductive Endocrinology Physician1164407938
  35. Gregory Ginsburg, MDAnesthesiology Physician1407847924
  36. Katharine Ginsburg, LICSWClinical Social Worker1942896659
  37. Matthew Ginsburg, D.M.D.General Practice Dentistry1932201217
  38. Richard Ginsburg, PHDPsychiatry Physician1821062159
  39. Nanci Ginty Butler, MSW, LICSWClinical Social Worker1932246162
  40. Marie Elena Gioiella, LICSWClinical Social Worker1083740443
  41. William Gionfriddo, M.D.Internal Medicine Physician1497167936
  42. Alana Giordano, DOInternal Medicine Physician1912844028
  43. Antonio Giordano, M.D., PH.DMedical Oncology Physician1578902243
  44. Jessica GiordanoPhysician Assistant1851990170
  45. Sara Giordano, M.D.Medical Oncology Physician1962683193
  46. Suzanne Giordano, RN, MSN, WHNP-BCWomen's Health Nurse Practitioner1144635202
  47. Wilfredo Giordano-Perez, M.D.Family Medicine Physician1902148141
  48. Gianluca Giorgini, DMDDentist1962842997
  49. Rachel Gioscia-Ryan, MDAnesthesiology Physician1649896200
  50. Karissa Giovannini, LICSWClinical Social Worker1518401496

The largest Massachusetts cities

  1. Worcester13,166
  2. Springfield8,553
  3. Cambridge5,145
  4. Brockton4,287
  5. Milford3,459

All of Massachusetts →

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.