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

John Henry Cook III, MD

Individual provider Internal Medicine Physician · NPI 1811981897

John Henry Cook III, MD is an Internal Medicine Physician in Leesburg, Virginia. Licensed in Virginia. Registered with an NPI since 2005.

Licensed in
VA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

224D Cornwall St NW Ste 102
Leesburg, VA 20176-2700
Phone: (703) 777-1146
Fax: (703) 777-3144
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 0101030448 (VA)

Record details

NPI number1811981897
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 7, 2005
Last updated in NPPESJanuary 9, 2010

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