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 383 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. Daniela KesslerPhysician Assistant1497472054
  2. Eric Kessler, MDPhysical Medicine & Rehabilitation Physician1699236547
  3. Helen KesslerStudent in an Organized Health Care Education/Training Program1730851718
  4. Katherine Kester, MDPediatrics Physician1255906996
  5. Louis Kester, MDSurgery Physician1326675505
  6. Laurie KeswickClinical Social Worker1902474703
  7. Ara Ketchedjian, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1467599720
  8. Kerunne Ketlogetswe, M.D.Internal Medicine Physician1619029378
  9. Adam Ketron, MD, PHDPsychosomatic Medicine Physician1124647946
  10. Lauren Kett, M.D., PH.D.Neurology Physician1508214297
  11. Mark Kettler, MDDiagnostic Radiology Physician1790790202
  12. Susan Keuker, NPFamily Nurse Practitioner1740561117
  13. Nancy Keuthen, PHDPsychologist1215928874
  14. Henry Keutmann, M.D.Endocrinology, Diabetes & Metabolism Physician1043400138
  15. Natasha Kewene-HiteMental Health Counselor1578385241
  16. Colleen Keyes, M.D., M.P.H.Pulmonary Disease Physician1124167093
  17. Harrison Keyes, MPAS, PA-CPhysician Assistant1902372519
  18. Janet Keyes, N.P.Nurse Practitioner1790845956
  19. Madeline Keyes, MDNeonatal-Perinatal Medicine Physician1780066910
  20. Susan Keyes, RNRegistered Nurse1992068258
  21. Christine Keywan, MSGenetic Counselor (M.S.)1376144899
  22. Kamal Khabbaz, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1992731558
  23. Holly Khachadoorian-Elia, M.D.Obstetrics & Gynecology Physician1063470458
  24. Karam Khaddour, MDMedical Oncology Physician1073041687
  25. Surya KhadilkarInternal Medicine Physician1245856707
  26. Hanan Khairalla, MDPsychiatry Physician1366862104
  27. Vahid Khairi, M.D.Student in an Organized Health Care Education/Training Program1427336163
  28. Marina Khait, FNPFamily Nurse Practitioner1205266962
  29. Emile KhalafOrthodontics and Dentofacial Orthopedics Dentistry1740173467
  30. Rasha Khalaf, PSY.D.Psychologist1871979450
  31. Abdullah Khalid, MDInternal Medicine Physician1396447660
  32. Abdullah Khalid, MDStudent in an Organized Health Care Education/Training Program1740081033
  33. Ayesha Khalid, MDInternal Medicine Physician1932629557
  34. Maria Khalid, M.D.Diagnostic Radiology Physician1417396128
  35. Muhammad Fareed Khalid, M.D.Internal Medicine Physician1568167518
  36. Faris Khalifa, DDSProsthodontics1033771944
  37. Ryan Khalifa, PAPhysician Assistant1407696917
  38. Anthony Khalifeh, MDStudent in an Organized Health Care Education/Training Program1740777168
  39. Hassan Khalil, M.D.Surgery Physician1346565744
  40. Karim KhalilStudent in an Organized Health Care Education/Training Program1710720149
  41. Shujaat KhalilInternal Medicine Physician1912381849
  42. Steve KhalilStudent in an Organized Health Care Education/Training Program1124861695
  43. Tara KhalilPhysician Assistant1851135008
  44. Hamed Khalili, MDInternal Medicine Physician1609085208
  45. Sarah KhalladyAcute Care Nurse Practitioner1811884570
  46. Amar Khalsa, LCSWClinical Social Worker1649671561
  47. Vissuta Khampatee, DDSDentist1528788585
  48. Abdur Khan, M.D.Interventional Cardiology Physician1700132750
  49. Adnan Khan, MDGastroenterology Physician1952807794
  50. Adnan Khan, MDStudent in an Organized Health Care Education/Training Program1265292304

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.