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 403 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. Sarah Kovan, MSCStudent in an Organized Health Care Education/Training Program1942950597
  2. Kellie Kovarik, MSWClinical Social Worker1114743259
  3. Marina Kovarsky, LICSWClinical Social Worker1538289459
  4. Eleni KovatsisPediatrics Physician1770285447
  5. Pete Kovatsis, MDAnesthesiology Physician1700845518
  6. Suzanne Koven, MDInternal Medicine Physician1790764561
  7. Linda Kovitch, CRNACertified Registered Nurse Anesthetist1689649428
  8. Agnieszka KowalczykPediatric Sports Medicine Physician1205243078
  9. Ashley Kowalczyk, NPWomen's Health Nurse Practitioner1053082990
  10. John Kowalczyk, M.D.Anesthesiology Physician1508124728
  11. Kyle KowalskiCase Manager/Care Coordinator1477389518
  12. Kathryn Kowalsky, LICSWClinical Social Worker1417424615
  13. Devan KowdleyPediatrics Physician1851239602
  14. Ashleigh Kowtoniuk, PA-CPhysician Assistant1255808218
  15. Harita KoyaClinical Social Worker1235093485
  16. Semra Koymen, MASpeech-Language Pathologist1851681589
  17. Anne Kozak, PAPhysician Assistant1962033654
  18. Benjamin Kozak, MDDiagnostic Radiology Physician1487015384
  19. Harry Kozakewich, MDCytopathology Physician1043229214
  20. Saliha Kozan, PHDPsychologist1932459377
  21. Mariel Kozberg, MDVascular Neurology Physician1710336003
  22. Lindsay Kozek, MD, PHDOphthalmology Physician1346833159
  23. Kyle Kozelka, LICSWClinical Social Worker1124544754
  24. Henry Koziel, M.D.Specialist1306875430
  25. Elizabeth Kozik, LMHCMental Health Counselor1942498969
  26. Elliott Kozin, MDOtolaryngology Physician1013200740
  27. Robert Koziol, RPHPharmacist1750160453
  28. Sophia KozlowskyStudent in an Organized Health Care Education/Training Program1760237226
  29. David Kozono, M.D., PH.D.Radiation Oncology Physician1164565115
  30. Shuei Kozu, LICSW, MHAClinical Social Worker1356447379
  31. Olga Kozyreva, M.D.Hematology (Internal Medicine) Physician1487758348
  32. Lauren KracoffOccupational Therapist1124623988
  33. Megan KradasPsychiatric/Mental Health Nurse Practitioner1093331910
  34. Richard Kradin, MDPulmonary Disease Physician1053301325
  35. Kristen Kraemer, PHDPsychologist1134718307
  36. Michelle Kraemer, PNPPediatric Nurse Practitioner1295048866
  37. Alfred Kraft, DMDGeneral Practice Dentistry1043323645
  38. Andrew Kraft, MDNeurology Physician1952861148
  39. Jeffrey Kraft, ATCAthletic Trainer1891122511
  40. Kenneth Kraft, PHDClinical Psychologist1093925869
  41. Stefan KraftAnatomic Pathology Physician1881761872
  42. Amanda Krahn, DPTPhysical Therapist1720767981
  43. Kelly Kraines, PAPhysician Assistant1457827115
  44. Katherine Krajewski, M.D.Diagnostic Radiology Physician1912167693
  45. Megan KrajewskiAnesthesiology Physician1699919613
  46. Eric Krakauer, MDHospice and Palliative Medicine (Family Medicine) Physician1649251000
  47. Douglas Krakower, MDInfectious Disease Physician1265568943
  48. Thalia Krakower, M.D.Internal Medicine Physician1821288325
  49. Cody Kramer, PA-CPhysician Assistant1881076677
  50. Daniel Kramer, MD, MPHClinical Cardiac Electrophysiology Physician1710013495

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.