NPI age
19 years
Enumerated 2007-03-07
● Active Type 2 · Organization
San Antonio Medical Associates
San Antonio Medical Associates is 1 of 12343 internal medicine organizations in Texas.
Primary specialty
Internal Medicine
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Hempel
Treasurer
Last NPPES update
2007-12-11
Source: monthly bulk 2026-05
How this organization compares
Across 12343 active internal medicine providers in Texas.
NPI age
19 years
↑ 2 yr above median
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2007 → 2026
2007-03Enumerated in NPPES
2007
2026
Where they practice
Primary practice location
Suite 703 414 Navarro
San Antonio, TX 782052515
Mailing address
Suite 703 414 Navarro
San Antonio, TX 782052515
Authorized official
Karl H Hempel, M.D.
Treasurer
📞 2102244811
Individual providers at this organization
3 individual providers on file at this primary practice address.
- Charles Briseno, M.D. Internal Medicine NPI 1184694457
- Karl Hempel, M.D. Internal Medicine NPI 1588634836
- John Seidenfeld, M.D. Internal Medicine NPI 1336321686
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,...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 | 00E754 | BCBS |
Practice context
Multi-provider organization. 3 individual providers on file at this primary address.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.