NPI age
6 years
Enumerated 2020-03-26
● Active
Type 1 · Individual
DR. Leroy James Seymour, MD
Seymour is 1 of 39 internal medicine providers in San Antonio and 1 of 377 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-08-11
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 377 active internal medicine providers in Texas.
NPI age
6 years
↓ 12 yr below median (18 yr)
State licenses
1 state
12% of peers hold multiple states
Subspecialties
1
In the 38% of peers with subspecialties
NPI lifetime · 2020 → 2026
2020-03Enumerated in NPPES
2020
2026
Where they practice
Practice location
4502 Medical Dr
San Antonio, TX 782294402
Mailing address
4502 Medical Dr
San Antonio, TX 782294402
Additional practice locations
1 secondary location on file with NPPES.
Location 2
8311 Ewing Halsell Dr
San Antonio, TX 782293741
Specialties
-
Internal Medicine PrimaryAn internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the...
-
Internal MedicineA 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. 1646 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.