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

Addison Grant Marshall

Individual provider Physician Assistant · NPI 1366911265

Addison Grant Marshall is a Physician Assistant in San Antonio, Texas. Qualified in 2018, 8 years ago. Practices with William A. Tisdall, MD, PA, a 9-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
8
Licensed in
TX
In the registry since
2018
Claim this listing Report a problem Suggest an edit

Practice location Address checks out

4502 Medical Dr
San Antonio, TX 78229
Phone: (210) 358-4000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (2)

  • 8935 Shady Hls, San Antonio, TX 78254-5525 — (832) 771-7163
  • 8935 Shady Hls, San Antonio, TX 78254-5525 — (832) 771-7163

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA12539 (TX)

Record details

NPI number1366911265
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedNovember 20, 2018
Last updated in NPPESMay 24, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice William A. Tisdall, M.D., P.A. — 9 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Other providers in San Antonio