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 440 of 838.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

The 8 largest groups in Boston

  1. Students in training6,126
  2. Internal Medicine Physician2,320
  3. Clinical Social Worker1,906
  4. Physician Assistant1,660
  5. Anesthesiology Physician1,082
  6. Nurse Practitioner961
  7. Family Nurse Practitioner938
  8. Diagnostic Radiology Physician896

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. Christa Liakos, LICSWClinical Social Worker1467889220
  2. Bill Lian, M.D.Internal Medicine Physician1366637761
  3. Jackie LianDiagnostic Radiology Physician1912407768
  4. Jeromy Lian, MDInternal Medicine Physician1447414321
  5. Leon LianStudent in an Organized Health Care Education/Training Program1366228504
  6. Shu Jing LianRegistered Nurse1205673175
  7. Anna Liang, MDGeriatric Medicine (Internal Medicine) Physician1306340427
  8. Camilla Liang, ODOptometrist1578275442
  9. Chang-Seng Liang, MDCardiovascular Disease Physician1417999210
  10. Hanwen LiangPhysical Therapist1700762937
  11. Kevin LiangStudent in an Organized Health Care Education/Training Program1831891852
  12. Lang LiangStudent in an Organized Health Care Education/Training Program1265388128
  13. Lisa Liang, MDDermatology Physician1235717224
  14. Lorrin Liang, MD, MSStudent in an Organized Health Care Education/Training Program1386585214
  15. Marilyn Liang, M.D.Pediatric Dermatology Physician1861430167
  16. Matthew Liang, MDRheumatology Physician1205893575
  17. Michelle Liang, M.D.Ophthalmology Physician1437483310
  18. Minxian Liang, MBStudent in an Organized Health Care Education/Training Program1932696176
  19. Patric Liang, M.D.Vascular Surgery Physician1578973293
  20. Qiaomei LiangFamily Nurse Practitioner1902665920
  21. Shawn Liang, MDHospitalist Physician1750919833
  22. Teresa Liang, MDStudent in an Organized Health Care Education/Training Program1902384134
  23. Orfeas Liangos, M.D.Nephrology Physician1013903673
  24. Aviv LianiStudent in an Organized Health Care Education/Training Program1275471179
  25. Emily Liao, MDPediatrics Physician1417647694
  26. Florence LiaoStudent in an Organized Health Care Education/Training Program1154187482
  27. Haihui Liao, M.D.Anatomic Pathology & Clinical Pathology Physician1790103208
  28. Jeff Liao, M.D.Internal Medicine Physician1356787717
  29. Jennifer Liao, ODOptometrist1144644147
  30. Katherine Liao, MDRheumatology Physician1013962703
  31. Wei-Lee Liao, MDPhysical Medicine & Rehabilitation Physician1780674853
  32. Zachary Liao, MD, MPH, MSInternal Medicine Physician1538692207
  33. Zixi LiaoInternal Medicine Physician1447132170
  34. Ericka Lias, PA-CPhysician Assistant1245745785
  35. Brandon LiauStudent in an Organized Health Care Education/Training Program1801640768
  36. Shih-Ning Liaw, M.D.Pediatric Hospice and Palliative Medicine Physician1467497859
  37. Caryn Libbey, M.D.Rheumatology Physician1417934142
  38. Peter Libby, MDCardiovascular Disease Physician1033161401
  39. Mark Libenson, MDNeurology with Special Qualifications in Child Neurology Physician1174541932
  40. Sarah Liber, FNPFamily Nurse Practitioner1285457317
  41. Mackenzie LiberaRegistered Nurse1801684196
  42. Cristina Liberati, MDStudent in an Organized Health Care Education/Training Program1962089540
  43. Vilma LibereStudent in an Organized Health Care Education/Training Program1427916808
  44. Abraham Liberman, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1881793172
  45. Stacey Liberman, M.S.Genetic Counselor (M.S.)1285086371
  46. Richard Liberthson, MDCardiovascular Disease Physician1699742346
  47. Tema Liberty, NPNurse Practitioner1558437103
  48. Dana Libhaber, LCSWMental Health Counselor1275884116
  49. Howard Libman, M.D.Internal Medicine Physician1568520914
  50. Michael LibreStudent in an Organized Health Care Education/Training Program1902608110

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.