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University Medical Center is once again bringing a higher level of care to the El Paso community and surrounding region. The Center for Diagnostic and Advanced Endoscopy has invested in state-of-the-art technology, recruited skilled nurses and partnered with board-certified physician experts to create the region’s most advanced gastroenterology facility in El Paso.

The experience of our highly skilled team is unmatched in the region and has quickly become a regional referral center for gastroenterologists across West Texas and Southern New Mexico.

Advanced Care

In addition to traditional procedures such as endoscopies and colonoscopies, the Center for Diagnostic and Advanced Endoscopy features advanced care available at UMC. These advanced procedures allow the specialized team to quickly and accurately diagnose and treat digestive illnesses such as Barrett’s Esophagus, Gastroesophageal Reflux Disease (GERD), Crohn’s Disease, gallstones and ulcers.

New procedures done exclusively at the Center for Diagnostic and Advanced Endoscopy:

  • Esophageal Ablation Therapy using HALO
  • Endoscopic Ultrasound (EUS)
    • Using Fine Needle Aspiration
    • Guided cancer staging in the gastrointestinal tract
    • Assisted Biliary Intervention
  • Celiac Plexus, Neurolysis and Block
  • Pancreatic Pseudocyst Drainage
  • Single-Balloon Enteroscopy

Service Locations

Clinic Leadership


Mark Zuckerman, MD

Mark Zuckerman, MD
Chief of the Division of Gastroenterology

Marc Zuckerman, MD, is Chief of the Division of Gastroenterology and Director of the Fellowship Program in gastroenterology and a Professor of Medicine at the Texas Tech University Health Sciences Center Paul L. Foster School of Medicine. He is a graduate of Tufts University School of Medicine in Boston and completed his residency at Baystate Medical Center (Tufts) and fellowship training in Gastroenterology at Albert Einstein College of Medicine in New York.

Antonio Mendoza-Ladd, MD

Antonio Mendoza-Ladd, MD

Dr. Antonio Mendoza Ladd, MD is a Gastroenterology Specialist in El Paso, TX and has over 15 years of experience in the medical field. Dr. Mendoza Ladd has more experience with Pancreatic Disease and Gallbladder/Bile Duct Diseases than other specialists in his area. He graduated from Universidad de San Carlos De Guatemala in 2005. He belongs to Texas Tech Physicians of El Paso and is affiliated with University Medical Center of El Paso. He has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Mendoza Ladd to book an appointment.

Very kind and knowledgeable. Helped me avoid surgery. I'm very grateful I found Dr. Mendoza-Ladd.
- Apr 10, 2020
Very knowledgeable and compassionate. He went in detail about my medical history and addressed issues that no other doctor had mentioned before. I felt at ease and understood. I would highly recommend Dr Mendoza-Ladd.
Maria - Apr 10, 2020

Sherif Elhanafi, MD

Sherif Elhanafi, MD

Dr. Sherif Elhanafi, MD is a Gastroenterology Specialist in El Paso, TX and has over a decades worth of experience in the medical field. Dr. Elhanafi has more experience with Endoscopic Ultrasound (EUS), ERCP and Cholangioscopy, Pancreas and Biliary Diseases, and Barrett's Esophagus Surveillance and Ablation. He graduated from the University of Mansoura School of Medicine in Egypt and did his Residency at Texas Tech's University Health Sciences Center in El Paso. He belongs to Texas Tech Physicians of El Paso and is affiliated with University Medical Center of El Paso.

Carmela Morales, MD

Carmela Morales, MD
Gastroenterologist

Carmela Morales, MD, is a gastroenterologist in private practice in El Paso and a founding member of UMC’s Center for Diagnostic and Advanced Endoscopy. She received her Bachelor of Science degree cum laude from Texas A&M University and graduated from Medical School at the University of Texas Southwestern in Dallas, which is also where she completed her residency and fellowship training. Dr. Morales is a past Chief of Staff at University Medical Center and currently serves on the Board of the UMC Foundation.

Dr. Morales is the sweetest of Dr's. She was very attentive to me while undergoing my routine procedures, being that I am somewhat of a nervous person. She went above and beyond and found a serious problem of which I had no symptoms for. I owe her for saving my life basically. She is a great Dr. in my book!
Gloria H - Sep 13, 2016
Dr Morales is very consistent in her attention to her patients, no matter how long its been between my appointments with her. Great bedside manners and discloses all the information I need, plus more.
Sandy - Apr 20, 2016
Very very good doctor, very professional very patient
- Mar 9, 2019

Cesar Garcia, MD

Cesar Garcia, MD

Dr. Cesar Garcia, MD, is a gastroenterologist at University Medical Center Of El Paso Center and is a founding member for the Diagnostic and Advanced Endoscopy Center. He received his Bachelor of Science degree from Universidad de Carabobo in Valencia, Venezuela and graduated from Medical School at the Texas Tech University Health Sciences Center of El Paso which is also where he completed his residency and fellowship training.

Richard McCallum, MD

Richard McCallum, MD
Director of Gastrointestinal Motility

Richard McCallum, MD, is a Professor of Medicine in the Division of Gastroenterology at the Texas Tech University Health Sciences Center Paul L. Foster School of Medicine and the Director of Gastrointestinal Motility at University Medical Center of El Paso. He received his Medical Degree from the University of Queensland Medical School in Australia and completed his residency in Internal Medicine at Washington University and Barnes Hospital. His fellowship training in gastroenterology was completed at the University of California and Wadsworth Veterans Hospital.