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Clinical Facilities

The University Health System – Children’s Kidney Center is conveniently located in the medical center and provides hemodialysis services for children.  Other activities include inpatient and outpatient care for children with kidney transplants, hypertension provide 24-hour Ambulatory Blood Pressure Monitoring (ABPM) and general kidney diseases.  Dietary advice and social support are offered to all children with kidney disease.

The University Transplant Center for Children is the only active pediatric kidney transplant center in the region.

Phone: 210-562-5365
Clinic Number: 210-358-8309
Clinic Fax: 210-358-2095

General Nephrology Clinic:
Tuesday, Wednesday and Thursday 8:30 a.m. – 2:30 p.m.

Transplant Clinic:
Monday and Friday 8:00 a.m. – 12:00 p.m.
Clinic Location:
University Hospital
4502 Medical Dr.
5th Floor Rio Tower, Take D Elevator
San Antonio, TX 78229

Monday, Wednesday, Friday, and Saturday 6 a.m. – 5 p.m.


Our activities extend outside the boundaries of San Antonio. Physicians offer outpatient consultations and kidney transplants to patients all over South Texas. The Division of Nephrology maintains close working relationships with the nephrologists at Providence Sierra Hospital in El Paso, Dell Children’s Hospital in Austin, Doctors Hospital at Renaissance in Edinburg, and Rio Grande Regional Hospital in McAllen. It also provides training to families to perform peritoneal dialysis and prepare them to conduct home dialysis. Comprehensive care is provided in South Texas children under the direction of the Children’s Kidney Center staff and with help of the local primary care physicians.


The Division of Nephrology offers rotations for pediatric residents and third year medical students. Students participate in the management of patients in both inpatient and outpatient settings. Elective is available to fourth year medical students, including students from other medical schools, and for adult nephrology fellows and fellows from other departments. The elective duration is four weeks. Emphasis is placed on renal physiology, pathophysiology, diagnostic evaluation and management of general nephrology patients as well as dialysis and transplant patients.

Research Activities

The Division of Nephrology is actively involved in both basic and clinical research. Dr. Arar has his own research laboratory. His research activities focus on developmental biology and the effects of growth factors and extracellular matrix proteins on kidney development and formation. Several multi-center clinical studies are also conducted in collaboration with the North American Pediatric Renal Transplant Cooperative Study (NAPRTCS) and pharmaceutical industry. These studies focus on anemia, hyperphosphatemia and secondary hyperparathyroidism in children with chronic kidney disease.