NPI age
20 years
Enumerated 2006-02-28
● Active
Type 1 · Individual
Ellen M. Grimm, MD
Grimm is 1 of 2 internal medicine providers in San Marcos and 1 of 1582 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2022-02-01
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1582 active internal medicine providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
14% of peers hold multiple states
Subspecialties
0
34% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-02Enumerated in NPPES
2006
2026
Where they practice
Practice location
1330 Wonder World Dr
San Marcos, TX 786667566
Mailing address
12221 N Mopac Expy
Austin, TX 787582401
Specialties
-
Internal Medicine PrimaryAn internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (TX) | 101802002 | |
| 01 (TX) | 390007009 | RAILROAD MEDICARE |
| 05 (TX) | 101802004 |
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 →
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