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

Frederick P Lillis, MD

Individual provider Internal Medicine Physician · NPI 1669408126

Frederick P Lillis, MD is an Internal Medicine Physician in Leesburg, Virginia. Licensed in Virginia. Registered with an NPI since 2006.

Licensed in
VA
In the registry since
2006
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

224D Cornwall St NW Ste 302
Leesburg, VA 20176-2700
Phone: (703) 737-7622
Fax: (703) 737-7943
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 0101022634 (VA)

Record details

NPI number1669408126
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 24, 2006
Last updated in NPPESNovember 1, 2012
Mailing address224d Cornwall St Nw, Suite 302, Leesburg, VA 20176-2700

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