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 449 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
- Jennifer Lo, M.D.Family Medicine Physician1508947748
- Jennifer Lo, MD, PHDDermatology Physician1427542109
- Kevin Bryan Lo, M.D.,Internal Medicine Physician1225480916
- Kristine Lo, M.D.Ophthalmology Physician1235368952
- Mindy Lo, M.D., PH.D.Pediatric Rheumatology Physician1528226271
- Ming LoPharmacist1659975977
- Shan Lo, DMDPublic Health Dentistry1376061838
- Stephen LoPsychologist1851030944
- Summer LoPhysical Therapist1528828977
- Wai-Kit Lo, MDGastroenterology Physician1043347404
- Yu-Ching LoClinical Social Worker1528806833
- Nicole Loan, ODOptometrist1528950847
- Katherine Lobben, PA-CPhysician Assistant1275092736
- Heather LobdellBehavior Technician1003375809
- Adriana LoboMental Health Counselor1083106512
- Catherine Lobo Galo, NPFamily Nurse Practitioner1477219459
- Jessika Loboda, NP-BCFamily Nurse Practitioner1306579263
- Michael Lobritz, M.D, PH.D.Infectious Disease Physician1003122540
- Emefah LoccohStudent in an Organized Health Care Education/Training Program1275111627
- Ashley Lochelt, L.I.C.S.W.Clinical Social Worker1811336316
- Paul Lochhead, MBCHBGastroenterology Physician1396194411
- Lorena Loci, NPGerontology Nurse Practitioner1558808691
- James Lock, MDPediatric Cardiology Physician1396736781
- Andrew Locke, M.D.Clinical Cardiac Electrophysiology Physician1922445055
- Christopher Locke, DPMFoot Surgery Podiatrist1609837723
- Emma Louise Locke, AGACNPCritical Care Medicine Nurse Practitioner1417673203
- Jared Locke, ATSStudent in an Organized Health Care Education/Training Program1356932560
- Rebecca Locke, MDPediatrics Physician1730355025
- Sara LockeStudent in an Organized Health Care Education/Training Program1477491843
- Patrick Lockett, DMDStudent in an Organized Health Care Education/Training Program1922844984
- Kaitlin Lockhart, AGNP-CNurse Practitioner1881199495
- Shahin Lockman, MDInfectious Disease Physician1629175229
- Brianna LocurtoPhysician Assistant1760099485
- Massimo Loda, MDClinical Pathology/Laboratory Medicine Physician1245306695
- Tobias Loddenkemper, MDNeurology with Special Qualifications in Child Neurology Physician1922272350
- Elizabeth Loder, MDInternal Medicine Physician1881684157
- Roshan LodhaStudent in an Organized Health Care Education/Training Program1417895632
- Nayna Lodhia, M.D.Gastroenterology Physician1205240314
- Laura LodoloEmergency Medicine Physician1255036976
- Maren LoeNeurological Surgery Physician1275361396
- Frances LoebClinical Social Worker1265114839
- Amanda Loerinc Guinyard, PH.D.Clinical Psychologist1134522055
- Cathy Loesch, LICSWClinical Social Worker1154093888
- Mark Loesch, PH.D.Psychologist1215357587
- Jennifer LoewDevelopmental Therapist1174183495
- Amanda LoewenRegistered Nurse1003762428
- John Loewenstein, M.D.Ophthalmology Physician1912997099
- Julia Loewenthal, M.D.Geriatric Medicine (Internal Medicine) Physician1841671013
- Brigid Loftus, PAPhysician Assistant1346131273
- Beth Logan, PHDClinical Child & Adolescent Psychologist1164831632
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.