NPI age
8 years
Enumerated 2018-03-30
● Active
Type 1 · Individual
Collin Thomas Clay, MD
Clay is 1 of 4 internal medicine providers in Jbsa Lackland and 1 of 114 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
VA
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-05-20
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 114 active internal medicine providers in Texas.
NPI age
8 years
↓ 8 yr below median (16 yr)
State licenses
1 state
9% of peers hold multiple states
Subspecialties
2
In the 50% of peers with subspecialties
NPI lifetime · 2018 → 2026
2018-03Enumerated in NPPES
2018
2026
Where they practice
Practice location
1100 Wilford Hall Loop
Jbsa Lackland, TX 782365638
Mailing address
1100 Wilford Hall Loop
Jbsa Lackland, TX 782365638
Additional practice locations
1 secondary location on file with NPPES.
Location 2
3551 Roger Brooke Dr
Jbsa Ft Sam Houston, TX 782344504
Specialties
-
Internal Medicine PrimaryAn Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders....
-
General PracticeA physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
-
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. 222 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 114 Internal Medicine providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this provider
- 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.