2026 data CMS NPPES NUCC Taxonomy

Doctors in Boston, MA

Compiled from official public sources by the PlainDoctor editorial team.

Active healthcare providers in Boston sourced from the CMS NPPES weekly file, no proprietary ratings, no editorial scores. NPI counts, specialty distribution, and primary practice addresses refreshed each release.

40,542
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
7,234 providers
Massachusetts
State
MA

40,542 healthcare providers across 20 specialties

Boston, Massachusetts appears in the CMS National Plan and Provider Enumeration System with 40,542 registered healthcare providers spanning 20 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 2023 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 (7,234 clinicians, followed by Internal Medicine Physician with 3,032 and Clinical Social Worker with 1,769). 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 579.1 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.

Within Massachusetts, Boston ranks #1 of 400 cities tracked by provider count, accounting for 19% of the state's registered providers. 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, searching by specialty narrows the 690-taxonomy roster to clinicians with the relevant training, and each provider page links to NPI, state licensing boards, and the NPPES registry for credential verification. 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, so listing details may be out of date; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients. Nothing on this page substitutes for consulting a licensed clinician about your personal health decisions.

40,542
Providers
20
Specialties
#1
of 400 MA cities
19%
of MA providers
579.1
Per 100K (state)

Which specialties are most common in Boston

Student in an Organized Health Care Education/Training Program 7,234
Internal Medicine Physician 3,032
Clinical Social Worker 1,769
Physician Assistant 1,466
Pediatrics Physician 1,166
Registered Nurse 978
Anesthesiology Physician 930
Family Nurse Practitioner 815
Nurse Practitioner 803
Physical Therapist 801
Mental Health Counselor 791
Psychiatry Physician 754
Diagnostic Radiology Physician 710
Dentist 668
Behavior Technician 581
Pediatric Nurse Practitioner 534
Pharmacist 505
Emergency Medicine Physician 499
Neurology Physician 485
Social Worker 485

Healthcare Providers (Page 180)

Name
Douglas Delaney, LICSW
Clinical Social Worker
Francis Delaney, MD
Body Imaging Physician
Lauren Delaney, PA-C
Physician Assistant
Margaret Delaney, DPT
Physical Therapist
Ruth Delaney, MD
Orthopaedic Surgery Physician
Thomas Delaney, MSW
Social Worker
William Delaney, LICSW
Clinical Social Worker
Ann Marie Delano, NP
Psychiatric/Mental Health Clinical Nurse Specialist
Catherine Delano, LCSW
Clinical Social Worker
Sophia Delano, MD, MPP
Pediatric Dermatology Physician
Ralph Delatorre, MD
Surgery Physician
Laurie Delatour
Student in an Organized Health Care Education/Training Program
Dana Delaunay, MA BCBA LABA
Behavior Analyst
Tyler Delaurentis
Student in an Organized Health Care Education/Training Program
Eleni Delavogia
Student in an Organized Health Care Education/Training Program
Tom Delbanco, M.D.
Internal Medicine Physician
Marcela Delcarmen, MD
Obstetrics & Gynecology Physician
Christina Delcea
Student in an Organized Health Care Education/Training Program
Deborah Dele-Oni, DO, MA
Student in an Organized Health Care Education/Training Program
Mark Deleo, PA
Physician Assistant
Melissa Deleon, LCSW
Social Worker
Robert Deleon-Kollmer
Student in an Organized Health Care Education/Training Program
Kimberly Deleonardis, M.S., C.G.C
Genetic Counselor (M.S.)
Ross Deleonardo, MD
Psychiatry Physician
Paula Delerme, M.S., C.G.C.
Genetic Counselor (M.S.)
Sophia Delevie-Orey, CNM, WHNP
Midwife
Amaris Delgado
Doula
Arlin Delgado, MD
Student in an Organized Health Care Education/Training Program
Elliott Delgado, MD, MS
Student in an Organized Health Care Education/Training Program
Hernan Delgado, M.D.
Pediatrics Physician
Janice Delgado, PSYD
Clinical Psychologist
Nykia Delgado, RN
Registered Nurse
Irene Delgado Tseretopoulos, PHD
Clinical Psychologist
Helen Delichatsios, MD
Internal Medicine Physician
Christy Delillo, NP
Registered Nurse
Stephen Delisi
Forensic Psychologist
Alisha Delissaint
Behavior Technician
Natalie Delivanis
Dentist
Wayne Dell, M.D.
Diagnostic Radiology Physician
Elizabeth Dell Isola
Peer Specialist
Heather Dell'Orfano, PHARMD., BCPS
Pharmacotherapy Pharmacist
Linda Della Porta, OTR/L
Occupational Therapist
Katherine Dellaporta, PSY.D.
Clinical Psychologist
Justine Dellaria, MSW, LICSW
Clinical Social Worker
Paul Dellaripa, MD
Rheumatology Physician
John Delle Chiaie, LICSW
Clinical Social Worker
Ashley Dellinger, OTR/L
Physical Rehabilitation Occupational Therapist
Robert Dello Russo, PH.D., LADC I
Addiction (Substance Use Disorder) Psychologist
Isaiah Dellorfano, PHARMD
Pharmacist
Nicholas Dellorusso, DMD
Oral and Maxillofacial Surgery (Dentist)

Nearby Cities in Massachusetts

Other Massachusetts cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Boston, MA?
There are 40,542 registered healthcare providers in Boston, MA, covering 20 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, Pediatrics Physician. Student in an Organized Health Care Education/Training Program has the most providers with 7,234.

Provider data from CMS NPPES (download.cms.gov/nppes); specialty classification from NUCC Health Care Provider Taxonomy. PlainDoctor does not rate or rank providers. Methodology · About

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from CMS National Plan and Provider Enumeration System (NPPES). Consult a qualified professional before making decisions based on this data.

Compiled from official public sources by the PlainDoctor editorial team.