NPI age
12 years
Enumerated 2014-04-14
● Active
Type 1 · Individual
David Sommerhalder
Sommerhalder is 1 of 95 internal medicine providers in San Antonio and 1 of 1069 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, TN
2 states
Status
Active
No deactivations on record
Last NPPES update
2021-12-13
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 1069 active internal medicine providers in Texas.
NPI age
12 years
↓ 6 yr below median (18 yr)
State licenses
2 states
Top 77% — 22% of peers are multi-state
Subspecialties
2
In the 52% of peers with subspecialties
NPI lifetime · 2014 → 2026
2014-04Enumerated in NPPES
2014
2026
Where they practice
Practice location
2829 Babcock Rd Ste 300
San Antonio, TX 782296011
Mailing address
Po Box 911230
Dallas, TX 753911230
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine...
-
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,...
-
Student in an Organized Health Care Education/Training ProgramAn individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 417185201 |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 4 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.