CTRC - Gastrointestinal Medical Oncology

Cancer Therapy & Research Center


We specialize in colon cancer screening and prevention and in the evaluation of abdominal pain, intestinal bleeding, irritable bowel syndrome, diarrhea and constipation, inflammatory bowel diseases, heartburn/acid reflux, peptic ulcer disease, and disorders of the pancreas, liver, and biliary tract. Our services include both inpatient and outpatient consultative evaluation and a broad range of routine and advanced endoscopic procedures.

State-of-the-art tertiary referral facilities and diagnostic and therapeutic technologies are used to define whether problems are present and to treat them when necessary. Our highly skilled team of gastroenterologists, nurses, and technicians are devoted to providing superb care utilizing the very latest knowledge and techniques.

For more information on High Risk Cancer Screening and Genetic Counseling in this office please visit the web page here.


Hematology and Oncology

Hematology and Oncology


Gastrointestinal and Biliary Cancer

Hematology / Oncology

Medical Oncology / Hematology

Physician Assistant

Cancer Genetics

Hematology and Oncology

Phone Numbers

Phone: 210-450-3833
Fax: 210-450-1150

Clinic Location

Cancer Therapy & Research Center
7979 Wurzbach Rd. , 3rd Floor, Zeller Building
San Antonio, Texas 78229
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Care Provided

Endoscopy & More

  • Upper Endoscopy (diagnostic and therapeutic)
  • Colonoscopy & Polypectomy
  • Screening colonoscopy
  • Feeding tube placement (PEG)
  • Esophageal manometry
  • Ambulatory esophageal pH (acid) monitoring
  • Wireless capsule endoscopy
  • Breath hydrogen testing
  • Stent placement/cancer palliation
  • Stricture dilation
  • Ablation of Barrett’s esophagus

Advanced Endoscopy Procedures

  • ERCP (endoscopic retrograde cholangiopancreatography), including
    • sphincterotomy
    • stone extraction and destruction, including laser lithotripsy
    • stent placement
    • stricture dilation
    • Spyglass™ cholangioscopy and pancreatoscopy
    • pancreatic pseudocyst drainage
  • EUS (endoscopic ultrasound), including
    • biopsy/fine needle aspirate
    • celiac plexus block (neurolysis)