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 291 of 838.
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
- Rebecca Greenspan, DOPhysical Medicine & Rehabilitation Physician1831727114
- Scott Greenspan, PH.D.Psychologist1891132676
- Aaron Greenspun, MDAnesthesiology Physician1326784083
- Jane Greenstein, PH.D.Clinical Child & Adolescent Psychologist1104186386
- Patricia Greenstein, MDNeurology Physician1396788972
- Scott Greenstein, M.D.Ophthalmology Physician1164484804
- Elizabeth Greenwald, MD, MSCPsychiatry Physician1083174916
- Jeffrey Greenwald, M.D.Internal Medicine Physician1326023466
- Kelsy Greenwald, MDEmergency Medicine Physician1578093720
- Kaitlyn GreenwayClinical Social Worker1730021296
- Katie Greenzang, M.D.Pediatric Hematology & Oncology Physician1437391000
- Kent Greep, MDStudent in an Organized Health Care Education/Training Program1114482775
- Aubrey Greer, MDAnesthesiology Physician1770110611
- David Greer, MDVascular Neurology Physician1003807215
- Jonathan Greer, M.D.Surgical Oncology Physician1194985614
- Joseph Greer, PHDPsychologist1538194691
- Maya Greer, MSN, FNPFamily Nurse Practitioner1538670138
- Michelle Greer, PA-CPhysician Assistant1144579723
- Roman Greer, PAPhysician Assistant1245687144
- Tyler Greffrath, DPTPhysical Therapist1649986266
- Emily Gregonis, RNPsychiatric/Mental Health Nurse Practitioner1629780986
- Kristin Gregor, PH.D.Clinical Psychologist1609170083
- Lydia Gregoret, AUDAudiologist1487089553
- Bryn GregorySocial Worker1669209920
- Kameko GregoryChild & Adolescent Psychiatric/Mental Health Registered Nurse1598490401
- Katherine Gregory, MDStudent in an Organized Health Care Education/Training Program1629877055
- Margaret Gregowicz, M.S., CCC-AAudiologist1255498150
- Dan Greif, PSYDPsychologist1194158402
- Astrea Greig, PSY.D.Psychologist1346657384
- Ashley Greiner, M.D., M.P.H.Emergency Medicine Physician1528383221
- Jack Greiner, D.O.Ophthalmology Physician1588601280
- Anna Greka, M.D.Internal Medicine Physician1679672596
- Marc Grella, MDPediatrics Physician1699765750
- Jillian Grelle, PTPhysical Therapist1427275981
- Hayley Grelson, PA-CPhysician Assistant1174169700
- Pierre-Olivier Grenier, M.D.Pediatric Dermatology Physician1144881160
- Rachel Grenier, MDDiagnostic Radiology Physician1497214506
- Samantha Grenier, PA-CMedical Physician Assistant1215393061
- Richard Grentzenberg, M.D.Otolaryngology Physician1538122536
- Seth Gresham, DPTPhysical Therapist1699334169
- Samuel Gretz, MDInternal Medicine Physician1134706088
- Hendrik Greve, MD, PHDStudent in an Organized Health Care Education/Training Program1508626086
- Laura Greve, PSYDClinical Psychologist1477610871
- Joannes Grevelink, MD PHDDermatology Physician1538150982
- Jeremy GrevetStudent in an Organized Health Care Education/Training Program1346876281
- Eric Grewal, MDClinical Pathology/Laboratory Medicine Physician1669121943
- Samuel Grewe, MDStudent in an Organized Health Care Education/Training Program1295536142
- Claire Greydanus, MDStudent in an Organized Health Care Education/Training Program1356289102
- Katherine Gribbons, MDStudent in an Organized Health Care Education/Training Program1902500283
- Marissa Griecci, CRNACertified Registered Nurse Anesthetist1992020952
The largest Massachusetts cities
- Worcester13,166
- Springfield8,553
- Cambridge5,145
- Brockton4,287
- Milford3,459
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.