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Healthcare Providers in District of Columbia

Find doctors, hospitals, and clinics in District of Columbia from the official NPPES NPI Registry. We found 139 providers in this listing.

139 Providers Found Data from NPPES NPI Registry Updated 2026
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All Providers Doctors Hospitals & Clinics
Showing 106–120 of 139 providers
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Individual (NPI-1) Active

JAY ALAN OCUIN MD

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-882-2500

NPI: 1841286689

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Individual (NPI-1) Active

JANIS M. ORLOWSKI MD

Internal Medicine, Nephrology

📍110 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-877-2848

NPI: 1457304271

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Individual (NPI-1) Active

RICHARD L PALMER MD

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-877-0698

NPI: 1134206741

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Individual (NPI-1) Active

RAMASWAMY PARTHASARATHY M.D

Internal Medicine, Nephrology

📍50 IRVING ST NW, WASHINGTON, DC, 20422

📞 202-745-8000

NPI: 1134222128

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Organization (NPI-2) Active

PARVEZ KHATRI MD PC

Internal Medicine, Nephrology

📍106 IRVING ST NW STE 211, WASHINGTON, DC, 20010

📞 202-449-9934

NPI: 1427384767

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Individual (NPI-1) Active

SAMIR S. PATEL M.D.

Internal Medicine, Nephrology

📍2150 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20037

📞 202-741-2222

NPI: 1073682712

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Individual (NPI-1) Active

THAKOR G. PATEL M.D.

Internal Medicine, Nephrology

📍50 IRVING ST NW, WASHINGTON, DC, 20422

📞 202-745-8178

NPI: 1619069374

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Organization (NPI-2) Active

PETER BERKMAN, MD

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-291-1645

NPI: 1508038118

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Individual (NPI-1) Active

FRED IRWIN POLSKY M.D.

Internal Medicine, Nephrology

📍4100 CATHEDRAL AVE NW, WASHINGTON, DC, 20016

📞 202-237-1224

NPI: 1285731620

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Individual (NPI-1) Active

DOMINIC RAJ MD

Internal Medicine, Nephrology

📍2150 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20037

📞 202-741-2283

NPI: 1043231285

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Individual (NPI-1) Active

JANANI RANGASWAMI MD

Internal Medicine, Nephrology

📍2150 PENNSYLVANIA AVE NW, WASHINGTON, DC, 20037

📞 202-677-6333

NPI: 1275748626

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Individual (NPI-1) Active

SUVI BHUBENDRA RASAIAH MD

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-877-0698

NPI: 1619453388

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Individual (NPI-1) Active

KATHRYN RATANAVANICH D.O.

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-882-2500

NPI: 1801093919

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Individual (NPI-1) Active

PREETI ROUT M.D.

Internal Medicine, Nephrology

📍106 IRVING ST NW, WASHINGTON, DC, 20010

📞 202-722-6040

NPI: 1184779076

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Individual (NPI-1) Active

LESLIE MARYANN HORAN ROWAN RN, CWCN

Registered Nurse, Ostomy Care

📍50 IRVING ST NW, WASHINGTON, DC, 20422

📞 202-745-8000

NPI: 1275743775

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🗺 Cities in District of Columbia

📍 Washington, D.C.

📊 Quick Stats

Providers Listed 139
Cities Found 1
State District of Columbia
Source NPPES NPI Registry

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Healthcare in District of Columbia

The District of Columbia, while not a state, has one of the most concentrated collections of world-class medical institutions in the United States. Washington, D.C. is home to MedStar Washington Hospital Center — the largest hospital in the District and a Level I Trauma Center — George Washington University Hospital (GWU Hospital), Georgetown University Hospital, Howard University Hospital, and Children's National Hospital, consistently ranked among the top children's hospitals in the nation.

The District also houses major federal health agencies, including the National Institutes of Health (NIH) Clinical Center in nearby Bethesda, Maryland — the world's largest hospital dedicated to clinical research — and the Walter Reed National Military Medical Center in Bethesda, the flagship military hospital in the United States.

D.C. has one of the most generous Medicaid programs in the country, covering adults earning up to 215% of the federal poverty level. The DC Department of Health Care Finance (DHCF) (dhcf.dc.gov) administers Medicaid, while the DC Health (dchealth.dc.gov) oversees public health programs and healthcare licensing. Despite its wealth of medical resources, D.C. has significant health disparities between its wealthier northwest neighborhoods and lower-income areas in the east and southeast.

Frequently Asked Questions — District of Columbia Healthcare