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 375 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. Claudine Kawabata, ODOptometrist1396797908
  2. Charles Kawada, MDObstetrics & Gynecology Physician1336114701
  3. Tatsuo Kawai, MD PHDTransplant Surgery Physician1285656314
  4. Kristen KawakamiMental Health Counselor1437040029
  5. Yuji Kawano, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1952876781
  6. Yumeko Kawano, M.D.Rheumatology Physician1316478886
  7. Kenta KawasakiStudent in an Organized Health Care Education/Training Program1114730793
  8. Waleerat KaweevisaltrakulProsthodontics1831340991
  9. Christina Kay, PHDPsychologist1366823072
  10. George Kay, D.M.D.,M.M.SCProsthodontics1972689248
  11. Jeffrey KayStudent in an Organized Health Care Education/Training Program1881336188
  12. Lara Kay, LICSWClinical Social Worker1528132917
  13. Leslie KayBehavior Technician1164981072
  14. Nicole Kay, MDEmergency Medicine Physician1548721293
  15. Robert Kay, MDOrthopaedic Surgery Physician1912495656
  16. Sae-In Kay, DOPediatric Anesthesiology Physician1720615362
  17. Jennifer Kayal, M.S.,CCC-AAudiologist1386746915
  18. Rayyan Kayal, BDSPeriodontics1609031434
  19. Shaden Kayal, BDSStudent in an Organized Health Care Education/Training Program1083273478
  20. Jane Kayarian, LCSWClinical Social Worker1740002534
  21. Stephanie Kayden, MD, MPHEmergency Medicine Physician1629034954
  22. Adam Kaye, MDEmergency Medicine Physician1942658190
  23. Dylan Kaye, MDStudent in an Organized Health Care Education/Training Program1386346823
  24. Kenneth Kaye, MDInfectious Disease Physician1497704589
  25. Laurel Kaye, MD PHDStudent in an Organized Health Care Education/Training Program1609678291
  26. Madeline Kaye, LCSWSocial Worker1750243234
  27. Gozdem KaykiNeonatal-Perinatal Medicine Physician1841037033
  28. Marina Kaymakcalan, PHARMDOncology Pharmacist1023767068
  29. Ata Kaynar, M.D.Critical Care Medicine (Anesthesiology) Physician1588601223
  30. Aditya Kaza, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1891832150
  31. Elisabeth Kaza, M.DPediatrics Physician1437477908
  32. Manu KazadiStudent in an Organized Health Care Education/Training Program1962256743
  33. Shamsah Kazani, M.D.Internal Medicine Physician1538174339
  34. Edgar KazarianStudent in an Organized Health Care Education/Training Program1629915905
  35. Yana KazekampMarriage & Family Therapist1003368432
  36. Elaina Kazes, D.M.D.Dentist1336551852
  37. Natalie Kazierad, AGNPNurse Practitioner1326640061
  38. Shirin Kazimov, MPH, MAStudent in an Organized Health Care Education/Training Program1053804971
  39. Jonah Kaziyev, MDStudent in an Organized Health Care Education/Training Program1578403051
  40. Melanie Kazlas, M.D.Ophthalmology Physician1487638680
  41. Hena KazmiSpeech-Language Pathologist1053266759
  42. Allison Keach, RN, CLCLactation Consultant (Registered Nurse)1801531694
  43. Joyce Keady, PNP, RNPediatric Nurse Practitioner1043234727
  44. Nell Kealy, RNRegistered Nurse1205781531
  45. Donald Keamy, M.D.,M.P.H.Pediatric Otolaryngology Physician1568453660
  46. Leslie Kean, MD/PHDPediatric Hematology & Oncology Physician1528140258
  47. Elizabeth Keane, NPAdult Health Nurse Practitioner1689827164
  48. Florence Keane, MDRadiation Oncology Physician1063707735
  49. John Keane, MDCardiovascular Disease Physician1265492847
  50. Meredith KeaneCase Manager/Care Coordinator1487452041

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.