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 125 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. Christy Cauley, MDSurgery Physician1619262375
  2. Marissa Cauley, PA-CMedical Physician Assistant1164572418
  3. Ryan Cauley, M.D.Plastic Surgery Physician1598907420
  4. Alessandro Cavaliere, PA-CPhysician Assistant1891362109
  5. Rona Cavallaro, N.P.Nurse Practitioner1154794451
  6. Sarah Cavallaro, MDEmergency Medicine Physician1386937241
  7. Anthony Cavallerano, ODOptometrist1285747832
  8. Jerry Cavallerano, O.D., PH.D.Optometrist1821020728
  9. Kelly CavanPediatric Nurse Practitioner1821863275
  10. Cody Cavanagh, PA-CPhysician Assistant1639802945
  11. Julien Cavanagh, MDNeurology Physician1396130993
  12. Christina CavanaroRegistered Nurse1962801845
  13. Michael Cavanaugh, R.N.Registered Nurse1710103114
  14. Timothy Cavanaugh, M.D.Family Medicine Physician1770503831
  15. Margaret Cavanaugh-Hussey, M.D., M.P.H.Dermatology Physician1558597039
  16. Claire Cavatorta, M.M.SC., PA-CPhysician Assistant1336247741
  17. Cara Cavazza, NPNurse Practitioner1063713030
  18. Erin Cawley, FNP-CFamily Nurse Practitioner1558167049
  19. Andrea Cawthorne, PTPhysical Therapist1508083007
  20. Makara Cayer, M.D.Anesthesiology Physician1487858635
  21. Cornel Cazacu, DMDStudent in an Organized Health Care Education/Training Program1649129008
  22. Brigid Cazzetta, BSN, RN, SRNARegistered Nurse1124862131
  23. Iulia CebanPhysician Assistant1558104604
  24. Catherine CebullaStudent in an Organized Health Care Education/Training Program1376303891
  25. Katharine CecalaPediatrics Physician1114226412
  26. Karen CedantMental Health Counselor1942969019
  27. Jacob Cedarbaum, MDInternal Medicine Physician1144789009
  28. Bryan Cedeno, NONEBehavior Technician1740901552
  29. Charles Cederberg, MAClinical Neuropsychologist1215554571
  30. Terra CederrothStudent in an Organized Health Care Education/Training Program1477819795
  31. Leslie Cedillo VerlageStudent in an Organized Health Care Education/Training Program1619724598
  32. Lisa Cedrone, RNRegistered Nurse1467951772
  33. Philip Cefalo, M.D.Internal Medicine Physician1407888936
  34. Lisa Ceglia, M.D.Endocrinology, Diabetes & Metabolism Physician1558417055
  35. Dalina Ceku, PAPhysician Assistant1699483438
  36. Christopher Celano, M.D.Psychiatry Physician1225233745
  37. Julie Celentano, LICACAcupuncturist1972176048
  38. Tiana Celesia, RDRegistered Dietitian1962526186
  39. Arthur Celestin, M.D.Plastic and Reconstructive Surgery Physician1043574288
  40. Daem CelestinStudent in an Organized Health Care Education/Training Program1568300929
  41. Ann Celi, MD MPHInternal Medicine Physician1467488916
  42. Joseph Celi, R.D.O.Optician1669816096
  43. Leo Celi, M.D. M.P.H. M.S.Critical Care Medicine (Internal Medicine) Physician1629257878
  44. Allison Celia, CNPNurse Practitioner1467022046
  45. Ayla CelikStudent in an Organized Health Care Education/Training Program1366315376
  46. Sura Celik, PA-CPhysician Assistant1235953795
  47. Morgan Celistan, DMDDentist1144847526
  48. Mary Nelligan Cella, DDSDentist1780328500
  49. Bartolome Celli, MDPulmonary Disease Physician1699762773
  50. Melissa Celli, PA-CPhysician Assistant1033742390

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.