NPI age
20 years
Enumerated 2005-11-10
● Active
Type 1 · Individual
Mark W Nelson, MD
Nelson is 1 of 72 internal medicine providers in San Antonio and 1 of 749 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-10-22
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 749 active internal medicine providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
15% of peers hold multiple states
Subspecialties
0
34% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-11Enumerated in NPPES
2005
2026
Where they practice
Practice location
3338 Oakwell Court, Suite 114
San Antonio, TX 782183019
Mailing address
3338 Oakwell Court, Suite 114
San Antonio, TX 782183019
Specialties
-
Internal Medicine PrimaryAn internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and "collagen" diseases.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 114876902 |
Practice context
Part of a multi-provider practice. 7 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.