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 243 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
- Kathleen Flaherty, RNLactation Consultant (Registered Nurse)1609462464
- Keith Flaherty, MDMedical Oncology Physician1861422966
- Madeline Flaherty, RN, FNP-BCNurse Practitioner1619644176
- Michael Flaherty, D.O.Pediatrics Physician1679862338
- Patricia Flaherty, ANPPrimary Care Nurse Practitioner1215085840
- Robert Flaherty, M.D.Hospitalist Physician1528005238
- Siobhan Flaherty, NPFamily Nurse Practitioner1851974497
- Tina Flaherty, N.P.Acute Care Nurse Practitioner1437366101
- Natalie Flaim, DCChiropractor1861129140
- Melissa Flak, D.P.TPhysical Therapist1578640934
- Aine Flanagan, LICSWClinical Social Worker1689819377
- Frances Flanagan, M.DPediatric Pulmonology Physician1225481039
- Hugh Flanagan, MDAnesthesiology Physician1255363206
- Jane Flanagan, PHD, APRN, BCAdult Health Nurse Practitioner1174749261
- Jenna Flanagan, MDObstetrics & Gynecology Physician1598185035
- Kelly Flanagan, RD LDNRegistered Dietitian1740824531
- Kerin Flanagan, FNPFamily Nurse Practitioner1356624217
- Lillian Flanagan, PAMedical Physician Assistant1679987226
- Monica Flanagan, NPRegistered Nurse1568571776
- Patricia Flanagan, NPAdult Health Nurse Practitioner1891937371
- Ryan Flanagan, MDGastroenterology Physician1306374178
- Timothy Flanagan, MDAnesthesiology Physician1609368166
- Aisling Flanagan-Hickey, NPFamily Nurse Practitioner1851426357
- Erin Flanagin, M.D.Internal Medicine Physician1144670753
- Karen Flanders, N.P.Nurse Practitioner1972835932
- Elizabeth Flanigan, M.D., M.P.H.Neonatal-Perinatal Medicine Physician1619057577
- Colin Flannelly, MD, MSCPulmonary Disease Physician1255062675
- Kristen FlanneryStudent in an Organized Health Care Education/Training Program1992313316
- Michele Flannery, PA-CPhysician Assistant1417406166
- Karl Flanzer, DMDGeneral Practice Dentistry1215439021
- Bess Flashner, MDPulmonary Disease Physician1588044382
- Nichole Flaspohler, PHARMDAmbulatory Care Pharmacist1891468344
- Amy Flaster, M.D.Internal Medicine Physician1366880502
- Sarah FlatinClinical Social Worker1134646730
- Rachael Flatt, PHDClinical Psychologist1164396305
- Russell Flatto, M.D.Anesthesiology Physician1225198070
- Robert Flaumenhaft, M.D.Internal Medicine Physician1508813973
- Carol Flavell, APRN-BCAdult Health Nurse Practitioner1376649244
- Libby FlavinMental Health Counselor1538702790
- Lila Flavin, MDAddiction Medicine (Psychiatry & Neurology) Physician1508421504
- Patricia Fleck, NNP-BCNeonatal Nurse Practitioner1346489150
- Eric Fleegler, MD, MPHPediatric Emergency Medicine (Pediatrics) Physician1215923362
- Sarah Fleet, MDPediatric Gastroenterology Physician1467742486
- Eduardo FleischerStudent in an Organized Health Care Education/Training Program1356979728
- Amy Fleischman, MDPediatric Endocrinology Physician1992880744
- Jan Fleischman, MSN, RN, APN, BCNurse Practitioner1144320912
- Katie Fleischman, PH.D.Clinical Psychologist1639421498
- Katharine Fleischmann, MDAnesthesiology Physician1578542544
- Kristin Fleischmann-Rose, N.P.Adult Health Nurse Practitioner1710308218
- Gary Fleisher, MDEmergency Medicine Physician1952369696
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.