NPI age
9 years
Enumerated 2017-04-14
● Active
Type 1 · Individual
DR. Mary Gasser, MD
Gasser is 1 of 48 internal medicine providers in Fort Sam Houston and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Licensed in
VA
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-06-11
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
9 years
↓ 8 yr below median (17 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
0
33% of peers hold subspecialties
NPI lifetime · 2017 → 2026
2017-04Enumerated in NPPES
2017
2026
Where they practice
Practice location
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Mailing address
3551 Roger Brooke Dr
Fort Sam Houston, TX 782344504
Specialties
-
Internal Medicine PrimaryA physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer,...
Practice context
Part of a multi-provider practice. 1394 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.