2026 data CMS NPPES NUCC Taxonomy

Doctors in Washington, DC

Compiled from official public sources by the PlainDoctor editorial team.

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

44,572
Providers
CMS NPPES-registered
20
Specialties
NUCC taxonomy codes
Home Health Aide
Top specialty
9,185 providers
District of Columbia
State
DC

44,572 healthcare providers across 20 specialties

Washington, District of Columbia appears in the CMS National Plan and Provider Enumeration System with 44,572 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 Washington - 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 Washington 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 Washington is weighted toward Home Health Aide (9,185 clinicians, followed by Personal Care Attendant with 5,131 and Case Manager/Care Coordinator with 3,128). 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 District of Columbia's population, Washington reports roughly 6564.6 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 District of Columbia, Washington ranks #1 of 6 cities tracked by provider count, accounting for 99.2% of the state's registered providers.

For Washington 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.

44,572
Providers
20
Specialties
#1
of 6 DC cities
99.2%
of DC providers
6564.6
Per 100K (state)

Which specialties are most common in Washington

Home Health Aide 9,185
Personal Care Attendant 5,131
Case Manager/Care Coordinator 3,128
Student in an Organized Health Care Education/Training Program 2,860
Clinical Social Worker 1,783
Internal Medicine Physician 936
Mental Health Counselor 783
Registered Nurse 781
Behavior Technician 754
Social Worker 738
Physical Therapist 687
Community Health Worker 654
Pharmacist 612
Speech-Language Pathologist 609
Family Nurse Practitioner 599
Pediatrics Physician 581
Professional Counselor 564
Physician Assistant 548
Clinical Psychologist 526
Psychiatry Physician 416

Healthcare Providers (Page 151)

Name
Sierra Casillas, CNM
Advanced Practice Midwife
Morgan Casimir, OTD, OTR/L
Occupational Therapist
Samora Casimir, OTR/L
Occupational Therapist
Ana Caskin
Pediatrics Physician
Mary Caspa Epse Fohtung
Home Health Aide
Nicholas Casscells
Orthopaedic Foot and Ankle Surgery Physician
Yvette Cassell
Personal Care Attendant
Paige Cassibo, CAA
Anesthesiologist Assistant
Carla Cassidy, NP
Adult Health Nurse Practitioner
Chloe Cassio
Speech-Language Pathologist
Monica Castagnetti, DPT
Physical Therapist
Ruben Castaneda
Other Technician
Sandra Castaneda, HHA
Home Health Aide
Reyna Castaneda Moreno
Home Health Aide
Jennifer Castaneda-Martinez
Behavior Technician
Amanda Castel, MD, MPH
Pediatrics Physician
Kerlly Castellano Crespo, AA
Anesthesiologist Assistant
Cinthya Castellanos Canar
Home Health Aide
Leslie Castelo-Soccio, MD
Dermatology Physician
Victoria Castens Hynes, DMD
General Practice Dentistry
Alejandro Castillo
Student in an Organized Health Care Education/Training Program
Angely Castillo
Personal Care Attendant
Elizabeth Castillo
School Social Worker
Mark Castillo, PA-C
Physician Assistant
Richmond Castillo, MD
Emergency Medicine Physician
Sara Castillo
Personal Care Attendant
Maria Castillo-Catoni, MD
Internal Medicine Physician
Nathan Castine
Physical Therapist
James Castle
Community Health Worker
June Castner, MD
General Practice Physician
Anne Casto, NNP-BC
Critical Care Neonatal Nurse Practitioner
Marie-France Castor
School Psychologist
Marissa Castriota, PHARMD
Pharmacist
Anthony Castro, OD
Optometrist
Besi Castro
Home Health Aide
Catherine Castro
Registered Nurse
El Castro, MD
Internal Medicine Physician
Jenifer Castro
Adult Companion
Marialuz Castro, LPC, PMH-C
Doula
Mary Castro, HHA
Home Health Aide
Oswaldo Castro, M.D.
Hematology (Internal Medicine) Physician
Rosella Castro, MD
Pediatrics Physician
Washawn Castro, LGSW
Social Worker
Yoselin Castro
Nurse's Aide
James Castro Argueta
Student in an Organized Health Care Education/Training Program
Nicolle Castro Caroca
Social Worker
Rochelle Castro Galick, FNP
Registered Nurse
Edesa Castro Mejia
Pastoral Counselor
Angie Castro Moreno
Clinical Social Worker
Jenny Castro Rexach
Emergency Registered Nurse

Nearby Cities in District of Columbia

Other District of Columbia cities with provider coverage in the CMS NPPES registry.

Compare specialties side-by-side →

Frequently Asked Questions

How many doctors are in Washington, DC?
There are 44,572 registered healthcare providers in Washington, DC, covering 20 specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Washington?
The most common specialties in Washington are Home Health Aide, Personal Care Attendant, Case Manager/Care Coordinator, Student in an Organized Health Care Education/Training Program, Clinical Social Worker. Home Health Aide has the most providers with 9,185.

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.