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 371 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. Victoria Karian, RN, CPNPPediatric Nurse Practitioner1881839363
  2. Fathia Karim, MDStudent in an Organized Health Care Education/Training Program1871342436
  3. Omar Karim, MDStudent in an Organized Health Care Education/Training Program1679375430
  4. Razeen KarimStudent in an Organized Health Care Education/Training Program1417601048
  5. Shahzina Karim, LICSWClinical Social Worker1841791548
  6. Nadeem Karimbux, DMDPeriodontics1417061102
  7. Jubin Karimi, M.D.Psychiatry Physician1659781573
  8. Sarah Karinja, MDPlastic Surgery Physician1821592437
  9. Neelima Karipineni, MDInternal Medicine Physician1891961009
  10. Beerinder Pal Karir, M.D.Anatomic Pathology & Clinical Pathology Physician1073963898
  11. Mary Karish-Dodge, D.M.D.General Practice Dentistry1194829606
  12. Navin Kariyawasam, MDStudent in an Organized Health Care Education/Training Program1952151300
  13. Ami KarkarAnesthesiology Physician1841425154
  14. Mahima KarkiStudent in an Organized Health Care Education/Training Program1790435246
  15. Donna Karl, APRNNurse Practitioner1366580490
  16. Kelly Karl, PSY.D.Clinical Psychologist1679703581
  17. Ellen Karlberg, LCSWClinical Social Worker1568330314
  18. Samantha Karle, MDInternal Medicine Physician1831891639
  19. Monica KarlenPain Management Registered Nurse1417608464
  20. Kirill Karlin, MDAnatomic Pathology Physician1851912034
  21. Lawrence Karlin, MDPediatric Orthopaedic Surgery Physician1235186263
  22. Elizabeth Karlson, MDRheumatology Physician1548228075
  23. Karl Karlson, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1316939796
  24. Lynne Karlson, MDPediatrics Physician1306953773
  25. Trisha Karma, MA, MHC-LPMental Health Counselor1700603651
  26. Rakesh Karmacharya, MD PHDPsychiatry Physician1720078389
  27. Amin KarmaliStudent in an Organized Health Care Education/Training Program1528927183
  28. Margaret Karmeris, PT, DPTPhysical Therapist1316577786
  29. Samuel KarmiyInternal Medicine Physician1083293492
  30. Rosy KarnaStudent in an Organized Health Care Education/Training Program1689530198
  31. Pooja KarnamadakalaNurse Practitioner1730046251
  32. Heidi Karner, RDNRegistered Dietitian1801439013
  33. Linda Karnett, NPFamily Nurse Practitioner1790360394
  34. Ankur Karnik, MDClinical Cardiac Electrophysiology Physician1174687495
  35. Vikram KarnikNeurology Physician1023627262
  36. Sydney KarnovskyFamily Medicine Physician1962083675
  37. Brittany Karns, PHARMDPharmacist1225461189
  38. Matthew KarofskyStudent in an Organized Health Care Education/Training Program1073396529
  39. Audra Karp, C.P.M.Midwife1245300946
  40. Lianna Karp, MDPsychiatry Physician1205282118
  41. Rebecca Karp, M.D.Hematology & Oncology Physician1265669659
  42. Alyssa Karpacz, CRNACertified Registered Nurse Anesthetist1265050322
  43. Shelly Karparis, APRNNurse Practitioner1073263133
  44. Cali Karpinski, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1336039767
  45. Judith Karpowich, R.N.Registered Nurse1871710129
  46. Tom Karson, M.D.Internal Medicine Physician1497958961
  47. Nancy Karthas, NPNurse Practitioner1386726750
  48. Allison Karthaus, PH.D.Counseling Psychologist1497007389
  49. Subbian Karumanchi, M.D.Nephrology Physician1174676753
  50. Elizabeth Karwowski, M.D.Internal Medicine Physician1487690699

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.