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 387 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. Thomas Kiernan, M.D.Cardiovascular Disease Physician1588869135
  2. Marisol Kiesz, PTPhysical Therapist1356898548
  3. Robyn Kievit, RD, CFNPFamily Nurse Practitioner1679787469
  4. Jane Kiff, MDPediatrics Physician1033163704
  5. Kayoko Kifuji, M.D.Specialist1417910241
  6. Julia KigginsBehavior Technician1033965660
  7. Altan KihmPediatric Dentistry1023539269
  8. Asha Kiirikki, LICSWClinical Social Worker1326562406
  9. Mercy KiizaPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1174246664
  10. Robin Kikuchi, MAOM, LIC.AC.Acupuncturist1366671794
  11. Ryota Kikuchi, D.D.S.General Practice Dentistry1215184197
  12. Jacqueline KilarNurse Practitioner1033008131
  13. Olivia Kilbourne, PA-CMedical Physician Assistant1497518542
  14. Ronan Kilbride, MDNeurology Physician1861581159
  15. Kerry Kilbridge, M.D.Medical Oncology Physician1427232917
  16. Abney Kilcollin, D.D.S.Dentist1982062139
  17. Aoife Kilcoyne, MB BCH BAODiagnostic Radiology Physician1992122204
  18. Niamh Kilcullen, MB.BCHInternal Medicine Physician1215170089
  19. Alexandra Kile, NPFamily Nurse Practitioner1063148039
  20. Elizabeth Kiley, RNNurse Practitioner1831447234
  21. Nicole Kiley, PA-CPhysician Assistant1295352821
  22. Kristen KilgallenStudent in an Organized Health Care Education/Training Program1881238103
  23. Juanita Kilgore, CASE MANAGERCase Manager/Care Coordinator1154136034
  24. Thomas Kilgore, DMDOral and Maxillofacial Surgery (Dentist)1568470581
  25. Anne Kilguss, LICSWClinical Social Worker1831165406
  26. Holly Kilim, M.D.Endocrinology, Diabetes & Metabolism Physician1871800649
  27. Nina Kilimnik, MS, NPAdult Health Nurse Practitioner1457445009
  28. Shane Killarney, MDStudent in an Organized Health Care Education/Training Program1730983040
  29. Margaret Killebrew, NPFamily Nurse Practitioner1568509404
  30. Kelsey Killeen, LCSWClinical Social Worker1811503469
  31. Tara Killeen, N.P.Nurse Practitioner1588688865
  32. Joy Killgoar, RNOtorhinolaryngology & Head-Neck Registered Nurse1336115690
  33. Benjamin Killilea, PH.D.Psychologist1205140746
  34. Katherine Killinger, FNP-CNurse Practitioner1154655447
  35. Mary Ellen Killion, PNP-BCPediatric Nurse Practitioner1477503498
  36. Timothy Killoran, M.D.Vascular & Interventional Radiology Physician1174696306
  37. Laura KilloughPediatric Nurse Practitioner1699533083
  38. Ryan Kilpatrick, MDPediatrics Physician1629503586
  39. Kathleen Kilrain, NPAdult Health Nurse Practitioner1578734745
  40. Michelle Kiluk, PANurse Practitioner1124058870
  41. Albert Kim, M.D., PH.D.Clinical Cardiac Electrophysiology Physician1184615361
  42. Albert Kim, M.D.Neurology Physician1134533664
  43. Alexander Kim, M.D.Pain Medicine (Anesthesiology) Physician1194082727
  44. Amanda Kim, MDPsychiatry Physician1275161713
  45. Andy Kim, MDStudent in an Organized Health Care Education/Training Program1457047904
  46. Anne Kim, M.D.Diagnostic Radiology Physician1043482938
  47. Anne KimStudent in an Organized Health Care Education/Training Program1720934839
  48. Annie KimCounselor1174489280
  49. Aram Kim, DMDProsthodontics1366873630
  50. Arthur Kim, MDInfectious Disease Physician1821089467

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.