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Pediatric Transplant Program

Meet Our Pediatric Transplant Team

Pediatric Nephrologists 

Nephrology is the study of the function and diseases of the kidneys. Our nephrologists are specially trained to take care of pediatric transplant patients.

Mazen Arar, MD

Mazen Arar, MD
Professor of Pediatrics
UT Health San Antonio

Dr. Arar is the Medical Director of the Pediatric Dialysis Program and Pediatric Kidney Transplant Program at University Hospital. He received his medical degree from the University of Jordan Medical School in 1980. He completed his pediatric nephrology fellowship at University of Texas Southwestern Medical School in Dallas, Texas in 1992. He is board certified in Pediatric Nephrology. Dr. Arar is actively involved in both basic and clinical research. His areas of interest are in kidney development, end stage renal disease and kidney transplantation.

Daniel Ranch, MD

Daniel Ranch, MD
Assistant Professor of Pediatrics
UT Health San Antonio

Dr. Ranch received his medical degree from Chulalongkorn University in Bangkok, Thailand in 2003. He completed his pediatric nephrology fellowship at the University of California in San Francisco, California in 2010. Dr. Ranch is board certified in both Pediatrics and Pediatric Nephrology. His research interests include cardiovascular complications in chronic kidney disease, including kidney transplant patients. Also, Dr. Ranch himself is a living kidney donor, and is an active advocate for enhancing the safety of living organ donation.

Ikuyo Yamaguchi, MD, PhD

Ikuyo Yamaguchi, MD, PhD
Associate Professor of Pediatrics
UT Health San Antonio

Dr. Yamaguchi received her medical degree at Kumamoto University and her PhD from Kurume University in Japan. She completed her pediatric training at Georgetown University Medical Center in Washington, D.C. in 2002 and pediatric nephrology training at Seattle Children’s Hospital in 2006. She is board-certified in pediatric nephrology and has clinical interests in hypertension, chronic kidney disease and renal transplantation. Her research interest is to understand the role of the microvasculature in acute and chronic renal diseases. Dr. Yamaguchi has presented her research at many regional and national nephrology conferences and published numerous papers in peer-reviewed journals. She is a member of the American Society of Nephrology and the American Society of Pediatric Nephrology.

Pediatric Gastroenterologist/Hepatologists

Naveen Mittal, MD

Naveen Mittal, MD
Professor and Chief of Medicine
Division of Pediatric Gastroenterology and Hepatology

Dr. Mittal is the Professor of Pediatrics and the Division Chief for Pediatric Gastroenterology at University Hospital. He received his medical degree from the University of Delhi, University College of Medical Sciences in 1984. He completed his post-doctoral fellowship in pediatric gastroenterology at the University of Chicago in 1996 and a clinical fellowship in gastroenterology at Bristol Royal Hospital, U.K. in 1991. He trained at the Hahnemann University Hospital in Philadelphia in 1992 and 1993; South Cleveland Hospital, Middleborough, U.K. in 1989 and 1990; and the Maulana Azad Medical College & Associated Hospitals from 1986 to 1990. Dr. Mittal is board certified in Pediatrics, Pediatric Gastroenterology and Pediatric Transplant Hepatology. His interests include the liver, intestine, pancreas, nutrition such as abdominal pain, diarrhea, vomiting, feeding disorders, abnormal liver function, fatty liver, short gut syndrome, IBD, IBS, Cystic Fibrosis, among other diseases and complications. He has authored numerous publications and conducted many speaking engagements.

Sandeep Patel

Sandeep Patel, MD
Assistant Professor of Medicine

Dr. Patel received advanced training under internationally-recognized endoscopist Dr. Joseph Geenen of the Medical College of Wisconsin in ERCP (endoscopic retrograde cholangiopancreatography), a specialized form of gastrointestinal endoscopy used to diagnose and treat many different disorders of the pancreas and the bile ducts. Skilled in both ERCP and endoscopic ultrasound (EUS), Dr. Patel serves as Chief of Pancreato-Biliary Endoscopy at the UT Health San Antonio School of Medicine and Associate Professor and Program Director of Advanced Endoscopy Fellowship at UT Health San Antonio. Dr. Patel has rapidly established UT Health San Antonio as a regional referral center for complex pancreatic and biliary problems, instituting a new and rapidly growing Pancreas Clinic and successfully bringing cutting-edge diagnostic and therapeutic technologies to UT Health San Antonio, including pancreatic and biliary manometry and intra-ductal pancreatic and biliary endoscopy.

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