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 39 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. Hannah AshtonPharmacist1730967779
  2. Nichole Ashton, R.N.Registered Nurse1316061849
  3. Bethany Ashworth, NPFamily Nurse Practitioner1265139612
  4. Lori Ashworth, MSW, LICSWClinical Social Worker1922387737
  5. Linah Ashy, BDSProsthodontics1972767952
  6. John AsideraStudent in an Organized Health Care Education/Training Program1871395095
  7. Anam Asif, MDSurgery Physician1609403757
  8. Charilaos AsikisDentist1508392424
  9. Ateeb AsimMental Health Counselor1083398986
  10. Eleni Asimacopoulos, M.D.Pediatrics Physician1205102555
  11. Ntesi Asimi, MDAnesthesiology Physician1972822963
  12. Asra Askari, MDNeurology Physician1750027918
  13. Lauri Askari, FNP-BCFamily Nurse Practitioner1174939664
  14. Reza Askari, M.D.Trauma Surgery Physician1063536944
  15. Ann Marie AskewAddiction (Substance Use Disorder) Counselor1134566862
  16. Nassar AskiaMental Health Counselor1063979763
  17. Noah Askman, PAPhysician Assistant1063666097
  18. Muhammad Aslam, M.D.Neonatal-Perinatal Medicine Physician1346313590
  19. Priya Aslam, MA COUNSELLINGStudent in an Organized Health Care Education/Training Program1134371636
  20. Zohra Aslami, MDStudent in an Organized Health Care Education/Training Program1467044933
  21. Sezer Aslan, MDSurgery Physician1770466237
  22. Mohammed Asmal, MD, PHDInfectious Disease Physician1407916059
  23. Lena Asmar, LICSWBehavior Analyst1962774000
  24. Aarti Asnani, MDCardiovascular Disease Physician1790944148
  25. Peter Asnis, MDOrthopaedic Surgery Physician1770564577
  26. Marina AspesiStudent in an Organized Health Care Education/Training Program1265380786
  27. Christia AspiliAnesthesiology Physician1417714882
  28. Sheridan Aspinwall, FNPFamily Nurse Practitioner1013709823
  29. Ionas AspridisStudent in an Organized Health Care Education/Training Program1114808938
  30. Rania Assaad, LMHCMental Health Counselor1710799366
  31. Tufik Assad, M.D.Pulmonary Disease Physician1093941890
  32. Mohammad AssaggafStudent in an Organized Health Care Education/Training Program1063842052
  33. Ali Assaker, M.D.Student in an Organized Health Care Education/Training Program1386498871
  34. Jean Pierre Assaker, MDPulmonary Disease Physician1063907111
  35. Richard Assaker, MDDiagnostic Radiology Physician1649765983
  36. Julia Assard, PA-CPhysician Assistant1992495790
  37. Diane Assatly-Roche, PACPhysician Assistant1942391255
  38. Buravej Assavapongpaiboon, MD, FICOOphthalmology Physician1538849419
  39. Mohamad Assayuri, MDNeuroradiology Physician1417475708
  40. Hussein Assi, M.DMedical Oncology Physician1235544362
  41. Bander Assiri, PHARMDInfectious Diseases Pharmacist1851237580
  42. Sabrina Assoumou, MDInfectious Disease Physician1356568786
  43. Joy Ast, DPTPhysical Therapist1841383114
  44. Michelle AsteFamily Nurse Practitioner1518606011
  45. Jon Aster, MD PHDAnatomic Pathology Physician1023075702
  46. Jaya Asthana, MSWClinical Social Worker1831213016
  47. Christina Astley, M.D., SC.D.Pediatric Endocrinology Physician1104086214
  48. Michael Astudillo, MDAnatomic Pathology & Clinical Pathology Physician1922538172
  49. Archana Asundi, M.D.Infectious Disease Physician1417319013
  50. Zara AtalPediatrics Physician1629605563

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.