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 343 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. Marisa Iacomini, MSW, LICSWClinical Social Worker1457495426
  2. Ashley IaconePhysician Assistant1891095253
  3. Lia IaconoOptician1023483427
  4. Anthony Iacoviello, MDStudent in an Organized Health Care Education/Training Program1942944335
  5. Anthony Iafrate, MD PHDAnatomic Pathology Physician1164403796
  6. Lisa Iannattone, MDDermatology Physician1114442548
  7. Tanya Ianniello, M.D.Pediatrics Physician1740347301
  8. Rocco Iannucci, MDPsychiatry Physician1538141635
  9. Ralph Iannuzzi, M.D.Otolaryngology Physician1538193396
  10. Laura Cecilia Ibanez Pintor, MDStudent in an Organized Health Care Education/Training Program1649114760
  11. Cecilia Ibeabuchi, R.N.Registered Nurse1215053749
  12. Patricia Ibeziako, MDChild & Adolescent Psychiatry Physician1851500300
  13. Imikomobong Ibia, MDEmergency Medicine Physician1285122762
  14. Juan Ibla, MDAnesthesiology Physician1962471284
  15. Mam Ibraheem, MD, MPHNeurology Physician1295149185
  16. Amir Ibrahim, MDSurgery Physician1518215417
  17. Fadi Ibrahim, MDDiagnostic Radiology Physician1285420067
  18. Ishaq Ibrahim, MDOrthopaedic Trauma Physician1871975003
  19. Khaled IbrahimStudent in an Organized Health Care Education/Training Program1316890981
  20. Mary IbrahimStudent in an Organized Health Care Education/Training Program1174329254
  21. Maryam Ibrahim, MDStudent in an Organized Health Care Education/Training Program1154943157
  22. Nadeen IbrahimTechnician1396525366
  23. Nasrien Ibrahim, MDCardiovascular Disease Physician1972765543
  24. Nicholas IbrahimStudent in an Organized Health Care Education/Training Program1225873912
  25. Osama IbrahimStudent in an Organized Health Care Education/Training Program1205509585
  26. Rand Ibrahim, MDInternal Medicine Physician1194427419
  27. Ronnie Ibrahim, MDPain Medicine (Anesthesiology) Physician1043707524
  28. Veronica Ibrahim, PA-CPhysician Assistant1639841083
  29. Eldina IbricNurse Practitioner1902424419
  30. Oghosa Ibude, M.D.Student in an Organized Health Care Education/Training Program1093641110
  31. Elaine Icban, O.D.Optometrist1609814177
  32. Fumito Ichinose, MDAnesthesiology Physician1780674812
  33. Nnenna Ichoku, RPHPharmacist1518654904
  34. John Ictech-CassisProsthodontics1013137108
  35. Ross Icyda, D.M.D.Dentist1205179421
  36. Esemuede IdadaCounselor1992346811
  37. Alexander IdarragaStudent in an Organized Health Care Education/Training Program1447953864
  38. Lucy IdeSocial Worker1134090707
  39. Jared Iding, MDStudent in an Organized Health Care Education/Training Program1881396893
  40. Randy Idler, MDFamily Medicine Physician1174145353
  41. Azza Idris, MD,PHDPediatric Infectious Diseases Physician1437378718
  42. Henrietta Idumwonyi, BSN, RNRegistered Nurse1538628342
  43. Oghogho IdumwonyiSocial Worker1669279899
  44. Michael Ieong, M.D.Pulmonary Disease Physician1528026598
  45. Osahon Igbinoba, DMD,BDSDentist1275334344
  46. Chidinma Igbokwe, ANPAdult Health Nurse Practitioner1184948937
  47. Faith Ighoyivwi, MDObstetrics & Gynecology Physician1609261148
  48. James Iglehart, MDSurgery Physician1174589329
  49. Julie Iglesias, NPPediatric Nurse Practitioner1609892207
  50. Daniela Iglesias GalloStudent in an Organized Health Care Education/Training Program1184500449

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.