Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Ellen M. Grimm, MD

Individual provider Nephrology Physician · NPI 1275500100

Ellen M. Grimm, MD is a Nephrology in San Marcos, Texas. Graduated from University of Texas Medical School at Houston in 1992, 34 years ago. Practices with The Austin Diagnostic Clinic PLLC, a 87-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
34
Trained at
University of Texas Medical School at Houston
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1330 Wonder World Dr
San Marcos, TX 78666-7566
Phone: (512) 805-0680
Fax: (512) 805-0682
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence J4170 (TX)

Record details

NPI number1275500100
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2006
Last updated in NPPESFebruary 1, 2022
Mailing address12221 N Mopac Expy, Austin, TX 78758-2401

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEPHROLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 1992 (34 years in practice)
Group practice The Austin Diagnostic Clinic Pllc — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations11 on file with Medicare

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