NPI age
15 years
Enumerated 2011-02-04
● Active
Type 1 · Individual
Mugabe Walker, MD
Walker 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, PA, CO
3 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-07
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 12343 active internal medicine providers in Texas.
NPI age
15 years
↓ 2 yr below 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 · 2011 → 2026
2011-02Enumerated in NPPES
2011
2026
Where they practice
Practice location
4522 Fredericksburg Rd Ste A14
San Antonio, TX 782016595
Mailing address
6101 Blue Lagoon Dr Ste 200
Miami, FL 331263168
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,...
-
Internal MedicineAn internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (CO) | 98835530 |
Multi-state credentialing: Licensed in 3 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 2 other active providers share this practice address in NPPES.
Recently enumerated nearby: 6 new internal medicine providers have been added in San Antonio in the last 180 days.
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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.