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

Gwen S Callahan, PAC

Individual provider Physician Assistant · NPI 1487836961

Gwen S Callahan, PAC is a Physician Assistant in Warrenton, Virginia. Practices as a sole proprietor and works from 3 locations. Licensed in Maryland, Michigan and Virginia.

Licensed in
MD, MI, VA
In the registry since
2007
Specialties on file
3
What do these letters mean?
PAC — Physician Assistant, Certified
A physician assistant holding current national certification; usually written PA-C.

See every abbreviation used in this directory →

Practice location Address checks out

500 Hospital Dr
Warrenton, VA 20186-3027
Phone: (540) 316-5000
Show map & directions

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

Additional practice locations (2)

  • 11116 Medical Campus Rd, Hagerstown, MD 21742-6710 — (301) 790-8804
  • 50505 Schoenherr Rd, Shelby Twp, MI 48315-3140 — (586) 314-0054

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 0110006327 (VA)
Physician Assistant Taxonomy 363A00000X · Licence C07550 (MD)
Medical Physician Assistant Taxonomy 363AM0700X · Licence 5601005001 (MI)

Record details

NPI number1487836961
Entity typeIndividual (Type 1)
GenderFemale
Credentials PAC
Sole proprietorYes
NPI enumeratedNovember 27, 2007
Last updated in NPPESJanuary 9, 2023
Certification dateJanuary 9, 2023

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