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 416 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. Jessica LanahanPhysician Assistant1750020251
  2. Jill Lanahan, M.D.Anesthesiology Physician1497738215
  3. Ana Lanas, LICSWMental Health Counselor1336843382
  4. Eileen Lancaster, AUD, CCC-AAudiologist1700483336
  5. Jason Lancaster, PHARMDPharmacotherapy Pharmacist1083807267
  6. Stephen Lancey, PH.D.Clinical Psychologist1912014853
  7. Kori Lanciotti, PA-CPhysician Assistant1699118364
  8. Azalia Landa Blanco, FNPFamily Nurse Practitioner1821827080
  9. Tali Landau Zemer, MDSurgery Physician1386937019
  10. Ruth Landau-Hoffeld, RN/NPOccupational Health Registered Nurse1861773624
  11. Jessica Landau-TaylorStudent in an Organized Health Care Education/Training Program1619736063
  12. Julian Landaw, MD, PHDAnesthesiology Physician1053990184
  13. Stephen Landaw, M.D.Hematology & Oncology Physician1598794851
  14. Sophia Landay, MDObstetrics & Gynecology Physician1770213472
  15. Clare Landefeld, MDInternal Medicine Physician1144710583
  16. Angela LanderholmPsychiatry Physician1639605439
  17. Ashley Landers, LCSWSocial Worker1760033765
  18. Madison LandersPediatric Registered Nurse1235908146
  19. Giora Landesberg, MDCritical Care Medicine (Anesthesiology) Physician1649253683
  20. Rocco Landi, M.D.Anesthesiology Physician1750678207
  21. Samantha LandinoStudent in an Organized Health Care Education/Training Program1497215529
  22. Adam Landman, MDEmergency Medicine Physician1043317712
  23. Wendy Landman, MDDiagnostic Radiology Physician1225144678
  24. Bruce Landon, M.D.Internal Medicine Physician1730126780
  25. Megan Landon, MDStudent in an Organized Health Care Education/Training Program1114593324
  26. Terry Landon, LICSWClinical Social Worker1245472547
  27. Helena LandquistBehavior Technician1922862648
  28. Christopher Landrigan, MD, MPHPediatrics Physician1982704276
  29. Mary Landrigan-Ossar, MD, PHDAnesthesiology Physician1487616850
  30. Catharine Landrigan-Paiva, LICSWClinical Social Worker1467790808
  31. Corin Landrum, MHSSocial Worker1437583143
  32. Adaira Landry, M.D.Emergency Medicine Physician1124310768
  33. Alexis Landry, PA-CPhysician Assistant1477853372
  34. Jean Landry, MSN NPNurse Practitioner1114024932
  35. Suzanne Landry, MS, RD, LDNRegistered Dietitian1285856294
  36. Violet Landry, FNPFamily Nurse Practitioner1912695149
  37. Hannah Landsberg, NPFamily Nurse Practitioner1265955587
  38. Adam Landsman, DPM, PHDFoot Surgery Podiatrist1407854094
  39. Rachel Landsman, PSYD, MAClinical Psychologist1912427071
  40. Isabela Landsteiner Sampaio Amendola, MDStudent in an Organized Health Care Education/Training Program1528869740
  41. Gretchen Landwehr, C.N.M.Advanced Practice Midwife1427114628
  42. Lindsey Landwehrle, CNPGerontology Nurse Practitioner1770191868
  43. Kathleen Landy, PA-CSurgical Physician Assistant1093438236
  44. Michael Landzberg, MDAdult Congenital Heart Disease Physician1124019864
  45. Alfreda Lane, MSWClinical Social Worker1992528780
  46. Andrew Lane, M.D., PH.D.Hematology & Oncology Physician1144372111
  47. Britney Lane, LICSWClinical Social Worker1811512908
  48. Catherine Lane, PT, DPT, MSPhysical Therapist1942249602
  49. Christopher Lane, M.D.Student in an Organized Health Care Education/Training Program1043599624
  50. Jamie LaneOther Technician1780661439

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.