NPI age
14 years
Enumerated 2012-03-31
● Active
Type 1 · Individual
DR. Whittney Aaron Warren, D.O.
Warren is 1 of 10 internal medicine providers in Fort Sam Houston and 1 of 479 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, IN
2 states
Status
Active
No deactivations on record
Last NPPES update
2026-05-08
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 479 active internal medicine providers in Texas.
NPI age
14 years
↓ 2 yr below median (16 yr)
State licenses
2 states
Top 67% — 32% of peers are multi-state
Subspecialties
1
In the 79% of peers with subspecialties
NPI lifetime · 2012 → 2026
2012-03Enumerated in NPPES
2012
2026
Where they practice
Practice location
3551 Roger Brooke Dr
Fort Sam Houston, TX 78234
Mailing address
4502 Medical Dr
San Antonio, TX 782294402
Additional practice locations
1 secondary location on file with NPPES.
Location 2
4502 Medical Dr
San Antonio, TX 782294492
Specialties
-
Internal Medicine PrimaryAn internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the...
-
Internal MedicineAn internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex...
Practice context
Part of a multi-provider practice. 1394 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 479 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.