Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. William R Frederick, MD

Individual provider Internal Medicine Physician · NPI 1932124682

Mr. William R Frederick, MD is an Internal Medicine Physician in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia, Maryland and Virginia.

Licensed in
DC, MD, VA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

106 Irving St NW Ste 304
Washington, DC 20010-2993
Phone: (202) 291-6423
Fax: (202) 291-0691
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Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4502 (DC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101051734 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence D0007970 (MD)

Record details

NPI number1932124682
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 13, 2006
Last updated in NPPESDecember 26, 2007

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