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 299 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. Giovanny GuzmanStudent in an Organized Health Care Education/Training Program1023701539
  2. Micaurys GuzmanCounselor1124373758
  3. Patricia Marie Guzman, MDStudent in an Organized Health Care Education/Training Program1588466643
  4. Yaileen Guzman ArochoAnatomic Pathology & Clinical Pathology Physician1588197727
  5. Edmarie Guzman-Velez, PHDClinical Psychologist1770038853
  6. Caitlin Guzy, PTPhysical Therapist1487027900
  7. Alison Guzzetti, DOStudent in an Organized Health Care Education/Training Program1508704875
  8. Nancy Gwon, M.D.Internal Medicine Physician1174645246
  9. Evan Gwyn, M.D.Internal Medicine Physician1154558500
  10. Courtney Gwynne, MS, CGCGenetic Counselor (M.S.)1346017100
  11. Stephany Gyasi, CNPFamily Nurse Practitioner1508369166
  12. Bethel H MariamPsychiatric/Mental Health Nurse Practitioner1053179234
  13. Diem Ha, DPTPhysical Therapist1821246174
  14. Emily HaStudent in an Organized Health Care Education/Training Program1225831027
  15. Joanna HaPharmacist1922602168
  16. Mason HaGeneral Practice Dentistry1871279042
  17. Sierra HaStudent in an Organized Health Care Education/Training Program1508664707
  18. Stephanie HaStudent in an Organized Health Care Education/Training Program1144177650
  19. Alexandra Haagensen, MDPediatric Endocrinology Physician1447329438
  20. Andrea Haas, M.D.Endocrinology, Diabetes & Metabolism Physician1710323241
  21. Briana Haas, PA-CPhysician Assistant1134080252
  22. Christopher Haas, M.D.Urology Physician1730575309
  23. Eric Haas, PAPhysician Assistant1144312174
  24. Jennifer Haas, MDInternal Medicine Physician1467419846
  25. Robert Haas, MSW, MA, LICSWClinical Social Worker1437249208
  26. Susan Haas, M.D.Obstetrics & Gynecology Physician1619950003
  27. Daphne Haas-Kogan, M.D.Radiation Oncology Physician1366484248
  28. Lana Habash, M.D.Family Medicine Physician1316911399
  29. Fadi Habbab, MDDiagnostic Radiology Physician1013184027
  30. Tim Habboub, DOStudent in an Organized Health Care Education/Training Program1699613158
  31. Amy Haber, MDAnesthesiology Physician1417583311
  32. Daniel Haber, MD PHDMedical Oncology Physician1952385783
  33. Jonah Haber, MDStudent in an Organized Health Care Education/Training Program1306647664
  34. Andreas Habertheuer, MD PHDStudent in an Organized Health Care Education/Training Program1093203481
  35. Victoria Habet, D.O.Pediatric Critical Care Medicine Physician1235593013
  36. Amy Habib, MDStudent in an Organized Health Care Education/Training Program1376292854
  37. Courtney Habib, PA-CPhysician Assistant1629678016
  38. Krystina Habib, NPNurse Practitioner1609385095
  39. Sara Habib, MDNeurology Physician1124683693
  40. Zehra Habib, PT PH.DPhysical Therapist1013119668
  41. Reza Habibi, M.D.Diagnostic Radiology Physician1528345113
  42. Mehrnaz Habibian, DMDDentist1285373977
  43. Carolyn HabigerNeurology Physician1518752542
  44. Karleen Habin, RNOncology Registered Nurse1043353881
  45. Cicero Matthew Habito, M.D.Diagnostic Radiology Physician1467766097
  46. Walid Habre, MD, PHDPediatric Anesthesiology Physician1104673086
  47. Hanna HabtemichaelBehavior Technician1891484085
  48. Margaret Hackett, MD, MPHStudent in an Organized Health Care Education/Training Program1174461222
  49. Mary Hackett, LICSWMental Health Counselor1720313877
  50. Claire Hacking, MPH, MSGenetic Counselor (M.S.)1902324155

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.