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

Dr. Shannon Marek, MD

Individual provider Internal Medicine Physician · NPI 1528282050

Dr. Shannon Marek, MD is a Gastroenterology in San Marcos, Texas. Graduated from University of Texas Medical School at Houston in 2004, 22 years ago. Practices with Texas Digestive Disease Consultants, PLLC, a 615-clinician group and accepts Medicare assignment. Licensed in Alabama and Georgia.

Years since qualifying
22
Trained at
University of Texas Medical School at Houston
Licensed in
AL, GA
In the registry since
2007
Specialties on file
2
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

1305 Wonder World Dr Ste 200
San Marcos, TX 78666-7546
Phone: (512) 754-8676
Fax: (512) 754-8680
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 059554 (GA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 27100 (AL)

Record details

NPI number1528282050
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 13, 2007
Last updated in NPPESFebruary 20, 2013
Mailing address831 Uluru Ave, New Braunfels, TX 78132-3890

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
Graduated 2004 (22 years in practice)
Group practice Texas Digestive Disease Consultants, Pllc — 615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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