Alert: Phone Scam Warning. Learn More

TDDC – San Marcos Research

San Marcos Research

1305 Wonder World Dr
Ste 200
San Marcos, TX 78666
Phone: 512-754-8676
Fax:

Monday – Friday
8:00AM – 5:00PM

Request An Appointment

If you are experiencing a medical emergency, please call 9-1-1.

To schedule an appointment, please call 512-754-8676 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.

TDDC – San Marcos Research
1305 Wonder World Dr, Ste 200, San Marcos, TX 78666

Our Providers

John Cluley, M.D.

Gastroenterologist
in San Marcos, 
TX
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Cluley

William Kern Deschner, M.D.

Gastroenterologist
in San Marcos, 
TX
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Deschner

Juan Diocares, M.D.

Gastroenterologist
in San Marcos, 
TX
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Diocares

Thomas Kepczyk, M.D.

Gastroenterologist
in San Marcos, 
TX
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Kepczyk

Shannon J. Marek, M.D.

Gastroenterologist
in San Marcos, 
TX
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Marek

Steven Pearce, M.D.

Gastroenterologist
in San Marcos, 
TX
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Pearce

Lori Najar, P.A.

Physician Assistant
in San Marcos, 
TX
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Lori

Alert: Phone Scam Warning

We’re seeing an increase in phone scams targeting patients. Callers may pose as Medicare, your doctor’s office, or another healthcare provider to obtain your Medicare number or other personal information.

Please remember:

  • Never share your Medicare number, Social Security number, or banking information with unsolicited callers.
  • Medicare will never call you unexpectedly to request your number or personal details.
  • Be wary of offers for “free” medical equipment or services in exchange for your Medicare information.
  • If a call seems suspicious, hang up and contact the clinic where you receive care directly using the phone number listed on our website for that location.

To report a suspicious call: Call 1-800-MEDICARE (1-800-633-4227) or visit reportfraud.ftc.gov.