NPI age
19 years
Enumerated 2006-09-17
● Active
Type 1 · Individual
Rosemary Castoreno, MD
Castoreno is 1 of 823 internal medicine providers in San Antonio and 1 of 12343 in Texas.
Primary specialty
Internal Medicine
Plus 3 subspecialties
Licensed in
TX, CA, OH
3 states
Status
Active
No deactivations on record
Last NPPES update
2026-02-18
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median (17 yr)
State licenses
3 states
Top 88% — 12% of peers are multi-state
Subspecialties
1
In the 33% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-09Enumerated in NPPES
2006
2026
Where they practice
Practice location
2551 N Interstate 35
San Antonio, TX 782081631
Mailing address
4102 S New Braunfels Ave Ste 110-482
San Antonio, TX 782231707
Additional practice locations
7 secondary locations on file with NPPES.
Location 2
4801 N Cage Blvd # H
Pharr, TX 785779625
Location 3
7100 Foundry Row Ste 288-32
Liberty Township, OH 450697768
Location 4
26250 Euclid Ave Ste 702
Euclid, OH 441323305
Location 5
1603 Babcock Rd Ste 234
San Antonio, TX 782294741
Location 6
5241 Wilson Mills Rd Ste 35c
Richmond Heights, OH 441432150
Location 7
3001 S Jackson St
San Angelo, TX 769045129
Location 8
220 Commercial Dr Ste B
Harker Heights, TX 765482566
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,...
-
HospitalistHospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 183531602 |
Multi-state credentialing: Licensed in 3 states. Useful context for credentialers building cross-state provider networks.
Practice context
Solo or small practice. No other active providers share this practice address in NPPES. This provider is listed as a sole proprietor.
Recently enumerated nearby: 6 new internal medicine providers have been added in San Antonio in the last 180 days.
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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.