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 38 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. Rathi Asaithambi, MD, MPHPediatrics Physician1205179355
  2. Saja Asakrah, M.D.Anatomic Pathology & Clinical Pathology Physician1578975124
  3. Ammar AsaliDentist1356774400
  4. Maamie Asamoah-MensahSleep Medicine (Psychiatry & Neurology) Physician1295312361
  5. Juan Asanza, MDPhysical Medicine & Rehabilitation Physician1790794832
  6. Nikhil AsapuStudent in an Organized Health Care Education/Training Program1023966116
  7. Praewvanit AsavanamuangDentist1902524812
  8. Spencer Asay, MDStudent in an Organized Health Care Education/Training Program1063353514
  9. Hassiet AsberomStudent in an Organized Health Care Education/Training Program1083415152
  10. Amber AsburyPhysical Therapist1760247647
  11. Juan Ascanio, MDStudent in an Organized Health Care Education/Training Program1114542164
  12. Elizabeth Asch, MDDiagnostic Radiology Physician1215165030
  13. Melissa Ascione, FNPFamily Nurse Practitioner1417408113
  14. Maria Asdourian, MDStudent in an Organized Health Care Education/Training Program1598469884
  15. Baharak Asefzadeh, O.D.Optometrist1053424564
  16. Laura AseltineNurse Practitioner1124689807
  17. Bernard Aserkoff, MDGastroenterology Physician1851381123
  18. Danny AsfouraStudent in an Organized Health Care Education/Training Program1255183620
  19. Bridget Asgarian, M.D.Anesthesiology Physician1902169949
  20. Justin Asgarpour, O.D.Optometrist1588929038
  21. Ali Asghar, M.D.Anesthesiology Physician1427311315
  22. Mahsa Asghari, PHYSICIAN ASSISTANTPhysician Assistant1386265643
  23. Jennifer Ash, PHDPsychologist1316430705
  24. John Ash, NPFamily Nurse Practitioner1467282079
  25. Samuel Ash, M.D.Pulmonary Disease Physician1083842231
  26. Shereen AshaiPsychologist1700610581
  27. Ashley Ashbaugh, M.S., CCC-SLPSpeech-Language Pathologist1386997245
  28. Rachel Ashby, MDObstetrics & Gynecology Physician1295792984
  29. Christian Ashby PadialStudent in an Organized Health Care Education/Training Program1083294490
  30. Randy AsheAthletic Trainer1982374385
  31. Quinn Asher, MDPediatrics Physician1962024224
  32. Rachel AsherStudent in an Organized Health Care Education/Training Program1376047563
  33. Sheetal Asher, D.M.DPediatric Dentistry1063827731
  34. Shreya AsherStudent in an Organized Health Care Education/Training Program1639952880
  35. Heidi Ashih, M.D., PH.D., M.S.Psychiatry Physician1699978734
  36. Samantha Ashinoff, MS, CCC-SLPSpeech-Language Pathologist1801579214
  37. Carina Ashkar, CNP, DNPFamily Nurse Practitioner1902628589
  38. Hanaa AshkarProsthodontics1538319819
  39. Jean Ashland, PHD, CCC-SLPSpeech-Language Pathologist1992997951
  40. Stanley Ashley, MDSurgery Physician1912997040
  41. Anagha Ashokan, MDInternal Medicine Physician1598567000
  42. Isa Ashoor, M.D.Pediatric Nephrology Physician1609072214
  43. Maryam Ashoor, M.D.Student in an Organized Health Care Education/Training Program1427742931
  44. Mohammed Ashour, MDStudent in an Organized Health Care Education/Training Program1093474397
  45. Asad AshrafOrthopaedic Surgery Physician1720549397
  46. Khizer AshrafOccupational Therapist1457848194
  47. Rose Ashraf, PHDPsychologist1629676960
  48. Sepideh Ashrafzadeh, MDDermatology Physician1205413598
  49. Yara Ashrawi, PASurgical Physician Assistant1336595818
  50. Anna Ashton, MSW, LCSWSocial Worker1508428236

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.