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

Mr. Warren Joseph Marion, MD

Individual provider Internal Medicine Physician · NPI 1033679063

Mr. Warren Joseph Marion, MD is an Internal Medicine Physician in Leesburg, Virginia. Practices as a sole proprietor. Licensed in Virginia.

Licensed in
VA
In the registry since
2019
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

38483 Forest Mills Rd
Leesburg, VA 20175
Phone: (540) 338-3447
Fax: (540) 338-3447
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 0101053454 (VA)

Record details

NPI number1033679063
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 25, 2019
Last updated in NPPESMarch 25, 2019

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