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 17 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. Abdulrhman Aleisa, MBBSStudent in an Organized Health Care Education/Training Program1720678592
  2. Alwaleed AleisaProsthodontics1689468068
  3. Deamah AleisaPeriodontics1992684989
  4. Jean Alekna, PPCNP-BCPediatric Nurse Practitioner1992344089
  5. Ugne Aleknaite, NPGerontology Nurse Practitioner1861934648
  6. Mehrdad AlemozaffarUrology Physician1376749861
  7. Raquel Alencar, M.D., PH.D.Diagnostic Radiology Physician1972531275
  8. Hamed Alenezi, DMDGeneral Practice Dentistry1487942587
  9. Saif Alenizi, M.D., M.P.H.Nephrology Physician1255680997
  10. Maha AlenziProsthodontics1194496208
  11. Maram Alenzi, MDInternal Medicine Physician1053042770
  12. Marissa Alert, PHDClinical Psychologist1760905277
  13. Joke Alesh, DMDGeneral Practice Dentistry1447626668
  14. Dana Alessa, MDSurgery Physician1770996936
  15. Stephanie Alessandri, ATCStudent in an Organized Health Care Education/Training Program1700398674
  16. Alex Alexander, PA-CMedical Physician Assistant1083284848
  17. Brian Alexander, M.D.Radiation Oncology Physician1275511149
  18. Cristina Alexander, M.D.Internal Medicine Physician1326182718
  19. Daniella Alexander, PA-CPhysician Assistant1912630229
  20. Erik Alexander, MDEndocrinology, Diabetes & Metabolism Physician1285692376
  21. Karen Alexander, M.D.Diagnostic Radiology Physician1891949863
  22. Kelsey AlexanderCommunity Health Worker1669948931
  23. Kristin Alexander, MSWClinical Social Worker1326644246
  24. Michael Alexander, M.D.Neurology Physician1306884697
  25. Peta-Maree Alexander, MBBSPediatric Critical Care Medicine Physician1215378435
  26. Richard Alexander, MDInternal Medicine Physician1518487792
  27. Stephen Alexander, MBBS FRACP MPHSpecialist1932428174
  28. Sydney Alexander, PA-CPhysician Assistant1366309536
  29. Corinne Alexander ColeHospice and Palliative Medicine (Internal Medicine) Physician1700869443
  30. Widner Alexandre, LADC IAddiction (Substance Use Disorder) Counselor1962278960
  31. Sanda AlexandrescuAnatomic Pathology Physician1326337247
  32. Claire Alexanian, MDDermatology Physician1881217263
  33. Sara Alexanian, MDEndocrinology, Diabetes & Metabolism Physician1609834837
  34. Mara Alexeev, M.D.Pediatrics Physician1750657912
  35. Margalie Alexis, R.N.Registered Nurse1881896066
  36. Nathalie Alexis, PSY.D.Clinical Psychologist1245886993
  37. Anastasia-Stefania AlexopoulosEndocrinology, Diabetes & Metabolism Physician1134560543
  38. Faisal AlfadhelNeuroradiology Physician1326692419
  39. Hussain AlfailkawiStudent in an Organized Health Care Education/Training Program1821778358
  40. Mohammad Alfaqih, M.D.Surgery Physician1447634225
  41. Lolwah AlfarajStudent in an Organized Health Care Education/Training Program1831927540
  42. Sarah Alfaraj, DDSStudent in an Organized Health Care Education/Training Program1326877648
  43. Valentina Alfaro Eller, LCSWSocial Worker1104496496
  44. Mansour Alfayez, M.DInternal Medicine Physician1437437142
  45. Tristan Alfie, MDStudent in an Organized Health Care Education/Training Program1619617248
  46. Paul Alfille, MDAnesthesiology Physician1659352771
  47. Marina Alfisher, MDDiagnostic Radiology Physician1417925207
  48. Pia Gabrielle Alfonso, M.D.Internal Medicine Physician1356035737
  49. Daniel Alford, M.D., M.P.H.Internal Medicine Physician1194708628
  50. Hassan AlfraidiCardiovascular Disease Physician1083230114

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.