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 431 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. Kimberly LehanPhysician Assistant1811733959
  2. Danielle Lehman, PAPhysician Assistant1902465834
  3. Laura Lehman, M.D.Neurology with Special Qualifications in Child Neurology Physician1720295686
  4. Nora Lehman, PA-CSurgical Physician Assistant1861704231
  5. Christopher Lehmann, LIC. AC.Acupuncturist1558680033
  6. Elizabeth LehmannMental Health Counselor1144775792
  7. Erin Lehmann, LICSWClinical Social Worker1144570268
  8. Julia Lehmann, LCSWClinical Social Worker1811195084
  9. Julia LehmannFamily Nurse Practitioner1386489300
  10. Leslie Lehmann, MDPediatric Hematology & Oncology Physician1770542359
  11. Lisa Lehmann, M.D.Internal Medicine Physician1477650083
  12. Joseph Lehrberg, RDRegistered Dietitian1265264584
  13. James Lehrich, MDNeurology Physician1205826518
  14. Matthew Lei, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1699455113
  15. Yang LeiStudent in an Organized Health Care Education/Training Program1376492934
  16. Helen Leibner, MDInternal Medicine Physician1154374346
  17. Akiva Leibowitz, M.D.Critical Care Medicine (Anesthesiology) Physician1215366935
  18. Katherine LeibySurgery Physician1265135214
  19. Alan Leichtner, MDPediatric Gastroenterology Physician1760595383
  20. Mark Leick, MDMedical Oncology Physician1912325143
  21. Matthew Leidl, MDOphthalmology Physician1023377306
  22. Richard Leigh-Pemberton, M.D.Internal Medicine Physician1063599231
  23. Norma Leija, MHPSPeer Specialist1881567600
  24. Elise LeinaweaverMental Health Counselor1225864812
  25. Robert Leinbach, MDInternal Medicine Physician1699765875
  26. Sarah Leins, PAPhysician Assistant1295265981
  27. Daniel LeismanStudent in an Organized Health Care Education/Training Program1164050852
  28. Amanda Leitch, ATCAthletic Trainer1184051823
  29. Melissa Leite, RDHDental Hygienist1487956835
  30. Alexandra LeiterClinical Social Worker1790154904
  31. Richard Leiter, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1053677302
  32. Holly Leith, CPNPPediatric Nurse Practitioner1023334786
  33. Ellen Leitman, MD, PHDStudent in an Organized Health Care Education/Training Program1659831055
  34. Miguel Leiva Juarez, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1962924753
  35. Derek Lejeune, MDInternal Medicine Physician1235791294
  36. Hannah Lejeune, FNP-BCFamily Nurse Practitioner1134957095
  37. Robert Lekowski, MDAnesthesiology Physician1134186596
  38. Brittany Leland, PAPhysician Assistant1659139780
  39. Christopher Leland, MDOrthopaedic Surgery Physician1871185769
  40. Kathryn LelandCase Manager/Care Coordinator1184567463
  41. Peggy Leland, NPFamily Nurse Practitioner1790883106
  42. Shannon Leland, MDPediatric Critical Care Medicine Physician1295121283
  43. Alexandra Lema Morocho, MDInternal Medicine Physician1124691480
  44. John Leman, M.S.ED.Student in an Organized Health Care Education/Training Program1417892787
  45. Gabrielle Lemarier, MSWClinical Social Worker1093218356
  46. Kathryn Lemay, CPNPPediatric Nurse Practitioner1699220889
  47. Anthony Lembo, M.D.Gastroenterology Physician1407826266
  48. Haley Lemieux, MS, RD, LDRegistered Dietitian1427519826
  49. Jacob Lemieux, MDInfectious Disease Physician1033590450
  50. Lindsay Lemire, MSN, NP-C, FNP-BCFamily Nurse Practitioner1174932867

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.