NPI age
19 years
Enumerated 2006-06-15
● Active
Type 1 · Individual
Andrew Lee Walsh III, MD
Walsh is 1 of 3 internal medicine providers in San Marcos and 1 of 1318 in Texas.
Primary specialty
Internal Medicine
Plus 2 subspecialties
Licensed in
TX, MO
2 states
Status
Active
No deactivations on record
Last NPPES update
2024-10-11
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 1318 active internal medicine providers in Texas.
NPI age
19 years
≈ at median (18 yr)
State licenses
2 states
Top 84% — 15% of peers are multi-state
Subspecialties
1
In the 57% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-06Enumerated in NPPES
2006
2026
Where they practice
Practice location
1301 Wonder World Dr
San Marcos, TX 786667533
Mailing address
Po Box 128
Bellaire, TX 774020128
Additional practice locations
4 secondary locations on file with NPPES.
Location 2
600 N Union Ave
New Braunfels, TX 781304194
Location 3
1445 Hanz Dr
New Braunfels, TX 781302567
Location 4
8715 Village Dr Ste 612
San Antonio, TX 782175407
Location 5
525 Branson Landing Blvd Ste 306
Branson, MO 656162140
Specialties
-
Internal Medicine PrimaryAn internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex...
-
Internal MedicineAn internist who diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 134141405 | |
| 01 (TX) | 2UE715 | BCBS RECORD ID |
| 05 (TX) | 134141408 |
Multi-state credentialing: Licensed in 2 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 62 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.