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

Grant David Williams, MD

Individual provider Emergency Medicine Physician · NPI 1487697074

Grant David Williams, MD is an Emergency Medicine in San Marcos, Texas. Graduated from University of Texas Southwestern Medical School at Dallas in 2003, 23 years ago. Practices with Wake Forest Emergency Providers, a 489-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
23
Trained at
University of Texas Southwestern Medical School at Dallas
Licensed in
TX
In the registry since
2006
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

1301 Wonder World Dr
San Marcos, TX 78666-7533
Phone: (512) 753-3796
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence M4656 (TX)

Record details

NPI number1487697074
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 13, 2006
Last updated in NPPESMarch 25, 2008
Mailing address2314 Ridgecrest St, San Marcos, TX 78666-4923

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF TEXAS SOUTHWESTERN MEDICAL SCHOOL AT DALLAS
Graduated 2003 (23 years in practice)
Group practice Wake Forest Emergency Providers — 489 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in San Marcos