2026 data CMS NPPES NUCC Taxonomy

Doctors in Philadelphia, PA

Compiled from official public sources by the PlainDoctor editorial team.

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

41,224
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Student in an Organized Health Care Education/Training Program
Top specialty
4,676 providers
Pennsylvania
State
PA

41,224 healthcare providers across 20 specialties

Philadelphia, Pennsylvania appears in the CMS National Plan and Provider Enumeration System with 41,224 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 Philadelphia - 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 Philadelphia 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 Philadelphia is weighted toward Student in an Organized Health Care Education/Training Program (4,676 clinicians, followed by Internal Medicine Physician with 2,247 and Pediatrics Physician with 1,581). 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 Pennsylvania's population, Philadelphia reports roughly 318 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 Pennsylvania, Philadelphia ranks #1 of 817 cities tracked by provider count, accounting for 16.3% of the state's registered providers.

For Philadelphia 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.

41,224
Providers
20
Specialties
#1
of 817 PA cities
16.3%
of PA providers
318
Per 100K (state)

Which specialties are most common in Philadelphia

Student in an Organized Health Care Education/Training Program 4,676
Internal Medicine Physician 2,247
Pediatrics Physician 1,581
Pharmacist 1,530
Mental Health Counselor 1,342
Clinical Social Worker 1,287
Social Worker 1,024
Physical Therapist 916
Physician Assistant 915
Emergency Medicine Physician 901
Family Nurse Practitioner 794
Professional Counselor 783
Family Medicine Physician 744
Psychiatry Physician 696
Registered Nurse 686
Certified Registered Nurse Anesthetist 651
Anesthesiology Physician 630
Occupational Therapist 575
Speech-Language Pathologist 544
Dentist 542

Healthcare Providers (Page 114)

Name
Hayley Cassidy
Surgery Physician
Valerie Cassis, DMD
Dentist
Aurora Casta, MD
Child & Adolescent Psychiatry Physician
Felicia Castagna
Occupational Therapist
Mark Castaldi, MD
Diagnostic Radiology Physician
Leigh Castanos
Clinical Social Worker
Jenna Castelberg, CRNP
Acute Care Nurse Practitioner
Christine Castellan
Student in an Organized Health Care Education/Training Program
Emily Castellanos, M.D.
Hematology & Oncology Physician
Jason Castellanos, M.D.
Student in an Organized Health Care Education/Training Program
Joseph Castellanos, MD
Student in an Organized Health Care Education/Training Program
Mackenzie Castellanos
Student in an Organized Health Care Education/Training Program
Sydney Castellanos
Student in an Organized Health Care Education/Training Program
Janet Castellini, M.S.S., L.C.S.W.
Clinical Social Worker
Katie Castelo, CRNP
Pediatric Nurse Practitioner
Lisa Castenova, PHYSICIAN ASSISTANT
Physician Assistant
Joseph Caster, MD
Radiation Oncology Physician
Anna Castiglia, CRNP
Radiation Oncology Physician
James Castiglione, MD
Student in an Organized Health Care Education/Training Program
Ruby Castilla-Puentes, MD, DRPH, MBA
Child & Adolescent Psychiatry Physician
Brenda Castillo, MD
Student in an Organized Health Care Education/Training Program
Cynthia Castillo
Mental Health Counselor
Gabriel Castillo, LAT, ATC
Athletic Trainer
Mario Claro Castillo, MSN-CRNA
Certified Registered Nurse Anesthetist
Patricia Castillo, APN
Psychiatric/Mental Health Nurse Practitioner
Samira Castillo
Mental Health Counselor
Isabel Castillo Hernandez, MD
Student in an Organized Health Care Education/Training Program
Carmen Castillo Reyes
Health Educator
Kara Castle
Social Worker
Juliana Castrillon, MD
Student in an Organized Health Care Education/Training Program
Angelina Castro, MD
Anesthesiology Physician
Gladina Castro, RPT
Physical Therapist
Gloria Castro
Doula
Gustavo Castro, MD COUNSELOR
Mental Health Counselor
Josua Castro, LMT
Massage Therapist
Kathryn Castro
Registered Nurse
Nemesia Castro, M.D.
Prescribing (Medical) Psychologist
Alberto Castro Bigalli, MD
Urology Physician
Geraldo Castro-Betances, MD
General Practice Physician
Adriana Castro-Convers, PHD
Counseling Psychologist
Luis Castro-Figueroa, M.D
Mental Health Counselor
Andrea Castro-Steffens, MFT
Marriage & Family Therapist
Lauren Catalano, MD
Internal Medicine Physician
Michael Catalano, MD
Student in an Organized Health Care Education/Training Program
Deniz Cataltepe, MD, MPHIL
Pediatrics Physician
Joshua Catapano, MD
Neurological Surgery Physician
Dana Catarella, LCSW
Clinical Social Worker
Eva Catenaccio, M.D.
Student in an Organized Health Care Education/Training Program
Mihaela Catighera, DMD
General Practice Dentistry
Robert Cato, MD
Internal Medicine Physician

Nearby Cities in Pennsylvania

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

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Philadelphia, PA?
There are 41,224 registered healthcare providers in Philadelphia, PA, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Philadelphia?
The most common specialties in Philadelphia are Student in an Organized Health Care Education/Training Program, Internal Medicine Physician, Pediatrics Physician, Pharmacist, Mental Health Counselor. Student in an Organized Health Care Education/Training Program has the most providers with 4,676.

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.