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 402 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. Anita Kostecki, M.D.Family Medicine Physician1295710119
  2. Randy KostelanskyAcupuncturist1326574377
  3. Chelsea KosterSpeech-Language Pathologist1912699984
  4. Megan Koster, MDInternal Medicine Physician1891108734
  5. Cori Kostick, PA-CPhysician Assistant1922320092
  6. Marc KostrubiakStudent in an Organized Health Care Education/Training Program1649852401
  7. Meghan Kostyk, APN, CPNPPediatric Nurse Practitioner1467499715
  8. Aliza KosyakovskyNurse Practitioner1437802287
  9. Jacob Kosyakovsky, MDNeurological Surgery Physician1710635263
  10. Leah Kosyakovsky, MDCardiovascular Disease Physician1548857055
  11. Tomer Kotek, MDAnesthesiology Physician1164167946
  12. Lara Kothari, MDPediatrics Physician1184692451
  13. Om KothariInternal Medicine Physician1598467797
  14. Sonia Kothari, PHARMDCardiology Pharmacist1689430738
  15. Elli KotinaDentist1891450680
  16. Yana Kotlar, LICSWClinical Social Worker1962892018
  17. Dylan Kotliar, MD, PHDStudent in an Organized Health Care Education/Training Program1568103034
  18. Gabriela Kotliar, LMHCMental Health Counselor1942221809
  19. Maya Kotlyar, MDInternal Medicine Physician1336223528
  20. Lili Kotmayer, MD,PHDStudent in an Organized Health Care Education/Training Program1306785589
  21. Alexey Kotov, MDAnesthesiology Physician1518942564
  22. Margaret Kott, M.D.Pain Medicine (Physical Medicine & Rehabilitation) Physician1366806911
  23. Camille Kotton, MDInfectious Disease Physician1699758227
  24. Darrell Kotton, MDPulmonary Disease Physician1760468714
  25. Christina KottooranStudent in an Organized Health Care Education/Training Program1902488570
  26. Ashwin Kotwal, MDInternal Medicine Physician1891108130
  27. Cooper KotzanSocial Worker1518729771
  28. Julie Kotzen, LICSWSchool Counselor1427334762
  29. Bakey KouandaStudent in an Organized Health Care Education/Training Program1699577536
  30. Rashmi KoulStudent in an Organized Health Care Education/Training Program1942886031
  31. Michail Koulianos, D.D.S.Dentist1134453293
  32. Kendra Kouloheras, MS, FNP-BC, RNFamily Nurse Practitioner1407221641
  33. Christos KoumoutseasGeneral Practice Dentistry1487774634
  34. Dylan Koundakjian, MDInfectious Disease Physician1245816024
  35. Lauren Koup, PA-CSurgical Physician Assistant1255701785
  36. Stella Kourembanas, MDNeonatal-Perinatal Medicine Physician1902815277
  37. Arianne Kourosh, MDDermatology Physician1417181801
  38. Marie Kourtelidis, CNMAdvanced Practice Midwife1649256017
  39. Polyxeni Koutkia, MDEndocrinology, Diabetes & Metabolism Physician1447240908
  40. Nicholas Koutrakis, DDSStudent in an Organized Health Care Education/Training Program1871292565
  41. Andrei Kouznetsov, MDNephrology Physician1114000585
  42. Victor Kovac, MDInfectious Disease Physician1710478185
  43. Alexandra Kovach, M.D.Anatomic Pathology & Clinical Pathology Physician1659508190
  44. Vesela Kovacheva, MD, PHDAnesthesiology Physician1659543569
  45. Bojan Kovacina, MDCMDiagnostic Radiology Physician1609154616
  46. Alexis Kovacs, PSY.D.Clinical Child & Adolescent Psychologist1942471594
  47. Stephen Kovacs, MD, PHDStudent in an Organized Health Care Education/Training Program1578258513
  48. Jessica Koval, NPFamily Nurse Practitioner1043582216
  49. Lauren KovalClinical Social Worker1528947280
  50. Deanna Kovalski, FNP-BCFamily Nurse Practitioner1700646213

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.