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 377 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. Erin Keenan, MS, RD, LDNPediatric Nutrition Registered Dietitian1932298049
  2. Kaitlyn Keenan, FNPFamily Nurse Practitioner1861273773
  3. Kathleen Keenan, NPNurse Practitioner1184784050
  4. Mary KeenanOptician1245599356
  5. Megan Keenan, M.D.Pediatrics Physician1558649145
  6. Tanya Keenan, MDInternal Medicine Physician1619314846
  7. Haben Kefella, M.D., M.H.SOphthalmology Physician1629498290
  8. Amanuel KehasseAmbulatory Care Pharmacist1710572680
  9. Sarah Kehayias, PSY.D.Clinical Child & Adolescent Psychologist1780965608
  10. Ekaterina Kehl, MDInternal Medicine Physician1073634416
  11. Kenneth Kehl, MDMedical Oncology Physician1649439076
  12. Sylvia Kehlenbrink Oh, M.D.Endocrinology, Diabetes & Metabolism Physician1770809147
  13. Jessica Kehoe, NPPsychiatric/Mental Health Nurse Practitioner1992387526
  14. Kelsey KehoeStudent in an Organized Health Care Education/Training Program1992626444
  15. Megan Kehoe, M.S.ED, BCBA, LABABehavior Analyst1205258522
  16. Meghan Kehoe, PA-CMedical Physician Assistant1912378019
  17. Samantha KehoePhysician Assistant1629737655
  18. Samantha Kehoe, PA-CPhysician Assistant1255186326
  19. Emily KeimPhysician Assistant1770245912
  20. Genevieve Keimowitz, PA-CMedical Physician Assistant1669628947
  21. Christopher Keir, M.D.Internal Medicine Physician1508989310
  22. Anja Kristina Keitel, M.D. M.P.H.Pediatrics Physician1770895047
  23. David Keith, DMD BDSOral & Maxillofacial Surgery (D.M.D.)1912998840
  24. Katherine Kekeisen, MSWClinical Social Worker1386367225
  25. Natasha Kekre, MDSpecialist1992132138
  26. John KekuChild & Adolescent Psychiatry Physician1598392128
  27. Ryan Kelaghan, PA-CPhysician Assistant1295118891
  28. Julia Keleher, FNP-BCFamily Nurse Practitioner1649936287
  29. Amar Kelkar, M.D.Hematology (Internal Medicine) Physician1801277348
  30. Jawaan KellamSocial Worker1881205920
  31. Suzanne Kellam, M.D.Student in an Organized Health Care Education/Training Program1508307877
  32. Ali Kelleher, MS BCBA LABABehavior Analyst1326419458
  33. Alyson Kelleher, ODOptometrist1225887953
  34. Cassandra Kelleher, MDSurgery Physician1760558449
  35. Dylan Kelleher, DOEmergency Medicine Physician1659996270
  36. Eoin Kelleher, MB BCHAnesthesiology Physician1598586653
  37. Kerriann Kelleher, LICSWClinical Social Worker1285387365
  38. Raymond Kelleher, MD PHDNeurology Physician1750396503
  39. Shannon KelleherMental Health Counselor1699601187
  40. Stephen Kelleher, M.D.Pediatric Anesthesiology Physician1508144684
  41. Thomas Kelleher, M.D.Gastroenterology Physician1376581678
  42. Yaralia Kelleher, PA-CPhysician Assistant1053680850
  43. Donna Kelleher-Yassen, CCRN, FNP-CFamily Nurse Practitioner1962791616
  44. Cecelia Keller, PTPhysical Therapist1073728432
  45. Danielle KellerStudent in an Organized Health Care Education/Training Program1376303461
  46. Elisabeth Keller, M.D.Pediatrics Physician1952375081
  47. Geoffrey KellerPhysical Therapist1881998599
  48. Jennifer Keller, PA-CPhysician Assistant1720436421
  49. Philip KellerBehavior Analyst1326551813
  50. Richard Keller, MDPediatric Endocrinology Physician1154496230

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.