Doctors and health care providers in Washington, DC
45,857 individual NPPES records list a practice address in Washington, 1st of 4 District of Columbia cities. The largest group is home health aide: 8,945, 20% of the city's records, against 20% across District of Columbia. Page 622 of 918.
The 8 largest groups in Washington
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Washington in District of Columbia
- Rank in District of Columbia1st of 4 cities by records
- Share of the state99.2% of District of Columbia's records
- Specialties present25 or more taxonomy codes
- Top three groups39.8% of all records
- Home Health Aide rank1st of the 10 District of Columbia cities with the most
Providers in Washington, alphabetically
- Esther ObiohaCase Manager/Care Coordinator1417784505
- Felix ObiohaCase Manager/Care Coordinator1194552281
- Lotanna Obiora, M.D.Anesthesiology Physician1285084681
- Foluso Obisanya, MBBCHStudent in an Organized Health Care Education/Training Program1346184546
- Olalekan ObisanyaCase Manager/Care Coordinator1225716608
- Odunayo Obisesan, PHARM.D, CGPPharmacist1265641971
- Thomas Obisesan, MDGeriatric Medicine (Internal Medicine) Physician1295894426
- Gregory Obiwuma, PMHNPPsychiatric/Mental Health Nurse Practitioner1164052692
- Joe ObiwuruHome Health Aide1134480072
- Kingsley ObiwuruHome Health Aide1588927560
- Maureen ObiwuruHome Health Aide1316506462
- Delasi ObobiCase Manager/Care Coordinator1184426363
- Anita Obodo, MDStudent in an Organized Health Care Education/Training Program1801582556
- Rachel ObohHome Health Aide1851652465
- Regina OboiteCase Manager/Care Coordinator1841987310
- Stephanie Oboite, DDSDentist1528578481
- Ella ObonyanoHome Health Aide1528318649
- Hector ObregonMental Health Counselor1023899473
- Aleesha Obrien, M. E.DMental Health Counselor1528717279
- Michelle Obrien, LGPCProfessional Counselor1376039925
- Nicole ObrienClinical Social Worker1972480754
- Chinwe Obudulu, RDRegistered Dietitian1295367670
- Dolapo ObukowhoCase Manager/Care Coordinator1346939071
- Thomas ObutuHome Health Aide1336406560
- Luis Ocampo ZarzaMental Health Counselor1851097901
- Christopher OcanseyHome Health Aide1891065769
- Grace OcheRegistered Nurse1992498935
- Margaret OcheHome Health Aide1609441765
- Onyee OcheLicensed Vocational Nurse1235519547
- Virginia OchiHome Health Aide1255793410
- Alice OchiengCase Manager/Care Coordinator1598464323
- Aisha OchoaHome Health Aide1942561550
- Meylin OchoaCase Manager/Care Coordinator1114640315
- Paulina Ochoa, MPTOrthopedic Physical Therapist1922131044
- Amy OcholaGerontology Occupational Therapist1538947007
- Evelyn OchulorNurse's Aide1902636913
- Grace OchulorRegistered Nurse1043072200
- Eunice Ochuonyo, NURSE PRACTITIONERFamily Nurse Practitioner1669914933
- Katie Ochwat, RDRegistered Dietitian1598350571
- Christian Ockenhouse, M.D.Infectious Disease Physician1639233851
- Karen Oconnell, MDPediatric Emergency Medicine (Pediatrics) Physician1699846055
- Christine Oconnor, PH.D., LCSWClinical Social Worker1780884411
- Kevin Oconnor, DOFamily Medicine Physician1740235340
- Tawnne Oconnor, FNPFamily Nurse Practitioner1619511565
- Tessie October, M.D.Pediatric Critical Care Medicine Physician1346329794
- Jay Ocuin, MDNephrology Physician1841286689
- Aster OdaHome Health Aide1508121443
- Hana OdaHome Health Aide1629892104
- Zenash OdaHome Health Aide1134480825
- Carlian Odae, LICSWClinical Social Worker1972296911
The largest District of Columbia cities
- Ne149
- Washington Dc147
- Bolling Afb74
How to read this directory
Washington, District of Columbia appears in the CMS National Plan and Provider Enumeration System with 45,857 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 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 2024 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 (8,945 clinicians, followed by Personal Care Attendant with 5,624 and Case Manager/Care Coordinator with 3,669). 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 6753.9 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.
For Washington 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 Washington, DC?
There are 45,857 registered healthcare providers in Washington, DC, covering 25 or more 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 8,945.
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.