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 366 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. Caroline KaizerBehavior Technician1487305876
  2. Arpan KakadiaPhysician Assistant1689458234
  3. Athina Kakavouli, M.D.Anesthesiology Physician1639406564
  4. Aditya Kakkar, DDSDentist1639918568
  5. Rahul Kakkar, M.D.Cardiovascular Disease Physician1255545604
  6. Bashar KakoDiagnostic Radiology Physician1164954178
  7. Homoud KakooliProsthodontics1588423545
  8. Kiriaki Kakoulidis, LMHCMental Health Counselor1124048681
  9. Loukas Kakoullis, MD, PHD, MPHStudent in an Organized Health Care Education/Training Program1174193759
  10. Margaret KalaInternal Medicine Physician1891149464
  11. Shashwat KalaStudent in an Organized Health Care Education/Training Program1285436444
  12. Sowandareya KalaiarasuStudent in an Organized Health Care Education/Training Program1801772512
  13. Grigorios Kalaitzidis, MDStudent in an Organized Health Care Education/Training Program1104575968
  14. Aren KalashStudent in an Organized Health Care Education/Training Program1902745508
  15. Arzu Kalayci, MDCardiovascular Disease Physician1952126575
  16. Ricki KalayciMental Health Counselor1417800889
  17. Alireza Kalbasi, PHARMDPharmacist1417878901
  18. Antoine Kaldany, M.D.Specialist1104973585
  19. Jennfier Kaldenberg, O.T.Occupational Therapist1033250907
  20. Madhuri Kale, PT, MSPhysical Therapist1932370061
  21. Soham KaleStudent in an Organized Health Care Education/Training Program1649072422
  22. Jennifer Kales, ANPAdult Health Nurse Practitioner1538136684
  23. Hannah Kalet, RD, LDNRegistered Dietitian1427422005
  24. Sahir KalimNephrology Physician1194984054
  25. Jack KalinStudent in an Organized Health Care Education/Training Program1639871767
  26. Kevin Kalin, DDSOral & Maxillofacial Surgery (D.M.D.)1285110874
  27. Sari Kalin, M.S., R.D., L.D.N.Nutritionist1023256088
  28. Chaney Kalinich, MD, MPHEmergency Medicine Physician1801698303
  29. Mark Kalinich, MD, PHDStudent in an Organized Health Care Education/Training Program1083317044
  30. Iurii KalinichenkoStudent in an Organized Health Care Education/Training Program1518816396
  31. Brian Kalish, MDNeonatal-Perinatal Medicine Physician1184967192
  32. Jeffrey Kalish, M.D.Vascular Surgery Physician1316963200
  33. Paul Kalish, D.M.D.Oral and Maxillofacial Surgery (Dentist)1467892513
  34. Robert Kalish, M.D.Rheumatology Physician1215974084
  35. Susan Kalish, MDGeriatric Medicine (Internal Medicine) Physician1790714335
  36. Susana KalishStudent in an Organized Health Care Education/Training Program1124851373
  37. Sara Kalkhoran, M.D.Internal Medicine Physician1518283274
  38. Cassandra KallAddiction (Substance Use Disorder) Registered Nurse1235962911
  39. Altina Kallajxhiu, PHARMDPharmacist1033864574
  40. Sirishma Kalli, M.D.Diagnostic Radiology Physician1255695763
  41. Aditya Kalluri, MDStudent in an Organized Health Care Education/Training Program1427635598
  42. Lily KalmanStudent in an Organized Health Care Education/Training Program1902681653
  43. Sarah KalmanovichStudent in an Organized Health Care Education/Training Program1386444230
  44. Renee KalmbachRegistered Dietitian1447429782
  45. Sarah KalnyMental Health Counselor1083233449
  46. Margarita Kalogerakos, MSPTPhysical Therapist1295857274
  47. Angela Kaloudis, LMHC, NCCMental Health Counselor1467860254
  48. Aman Kalra, MDAnesthesiology Physician1447358072
  49. Heide Kalra, PAPhysician Assistant1316461437
  50. Mannudeep Kalra, MDDiagnostic Radiology Physician1659407393

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.