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 396 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
- Hans-Georg Klingemann, MDInternal Medicine Physician1679677314
- Rachel KlingensteinClinical Social Worker1104513373
- Amanda Klinger, M.D.Internal Medicine Physician1952781619
- Lauren Klingman, LICSWSocial Worker1841916772
- Elizabeth Klings, M.D.Pulmonary Disease Physician1982681755
- Katlyn KlinskeStudent in an Organized Health Care Education/Training Program1629812714
- Lori Kloc, NPAcute Care Nurse Practitioner1922317114
- Michael Klompas, MDInfectious Disease Physician1710955414
- Malgorzata Klonowska, M.D.Neurology Physician1225147721
- Erik KlontzClinical Pathology/Laboratory Medicine Physician1417533977
- Colin Kloock, MDStudent in an Organized Health Care Education/Training Program1720665599
- Bethany Klos, RD, LDNRegistered Dietitian1831119288
- Julia Klosk, RD, LDNRegistered Dietitian1447026901
- Lisa Klosterboer, CPNP AC/PCPediatric Nurse Practitioner1235596016
- Timothy Klouda, D.O.Pediatric Pulmonology Physician1437508330
- Roman Klufas, MDNeuroradiology Physician1598744427
- Maximiliano Klug, MDDiagnostic Radiology Physician1841182565
- Jacquelin Kluge, ATCAthletic Trainer1992499040
- Sonja KlumppStudent in an Organized Health Care Education/Training Program1932047842
- Renee Kmetzo, CRNACertified Registered Nurse Anesthetist1578122842
- Mary Knab, P.T.Physical Therapist1013328905
- Matthew Knabel, DPMFoot & Ankle Surgery Podiatrist1417489667
- Marcelo KnapikPhysical Therapist1497221295
- Christine Knapp, CNMAdvanced Practice Midwife1851434757
- Margo Knapp, MDChild & Adolescent Psychiatry Physician1609092550
- Philip Knapp, MDEndocrinology, Diabetes & Metabolism Physician1407819444
- Robert Knapp, DOAnesthesiology Physician1932166733
- Sarah Knapp, M.D.Endocrinology, Diabetes & Metabolism Physician1902253586
- Natalia KnaraPhysical Therapist1205619590
- Maryanne Knasas Irwin, DMDEndodontics1538376165
- Hanna Knauss, MDInternal Medicine Physician1851973754
- Robert Knauz, PHDPsychologist1710968169
- Michael Kneeland, MDInternal Medicine Physician1346326352
- Jamie KnellSurgery Physician1447645783
- Erik Knelson, M.D., PH.D.Internal Medicine Physician1528449717
- Andrea Knestel, PH.D.Clinical Psychologist1780161091
- Amitha Knight, MDPediatrics Physician1669595187
- Dynyella KnightCase Manager/Care Coordinator1669219424
- Helen Knight, MDInternal Medicine Physician1932565199
- Jeffrey Knight, PH.D.Clinical Neuropsychologist1538266226
- Jessica Knight, MS OTR/LOccupational Therapist1306091566
- Jessica Knight, FNPFamily Nurse Practitioner1639540610
- John Knight, MDPediatrics Physician1104938323
- Jordan KnightAthletic Trainer1740724400
- Nina KnightBehavior Technician1407623259
- Paige KnightCounselor1619643657
- Kenia Knights, M.D.Student in an Organized Health Care Education/Training Program1922444678
- Rachel Knipe, MDInternal Medicine Physician1093972556
- David Knipp, M.D.Diagnostic Radiology Physician1336567098
- Ariel KnissDiagnostic Radiology Physician1851910426
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.