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Enjoy a better life and brighter future through kidney disease treatment and research in San Antonio and South Texas


Our Experience

Our site has 7 years experience in phase I-IV clinical research studies. We have been one of the top enrollers in one-third of the studies we have participated in. As top enroller, we have successfully completed 6 sponsor audits and an FDA audit. Our study coordinators and research staff are fully dedicated to research, with 34 years of research experience and over 60 years of nephrology/dialysis experience between them.

Our Practice

Renal Associates, P.A. is the largest renal care provider in San Antonio and the surrounding area with 29 nephrologists covering:

  • 8 outpatient clinics in San Antonio
  • 11 outpatient clinics in South Texas
  • 40 dialysis clinics in San Antonio and surrounding area
  • Vascular access center with 3 interventional nephrologists

Our Staff

Our staff is dedicated to providing rapid enrollment, timely and accurate data collection and excellent patient care. Our staff is IATA trained and experienced in the processing, packing, and shipping of blood specimens to central laboratories, including the handling of frozen specimens and use of dry ice.

We have on staff:

  • 5 Full-time Clinical Study Coordinators
  • 2 Data Entry Clerks
  • Recruiter
  • SAE Coordinator
  • Registered Dietician
  • Clinical Manager
  • Regulatory/Business Manager
  • Business Development Manager

They are experienced in:

  • PK draws
  • ECGs
  • Phlebotomy
  • Electronic data capture
  • 24 hour urine collection
  • Biomarker sample collection and processing
  • Processing, packing and shipping laboratory specimens

Many of our staff members are fluent in Spanish and English, including Dr. Pergola, and several of our co-investigators.

For more information, please contact:

Deborah Kotara, RN

Business Development/Recruitment Coordinator/Research Nurse

Phone: 210.223.4444
Send an email >

Interested in our research site?

If you are interested in our research site, please call us at 210.223.4444, or complete the form below and we’ll contact you as soon as possible.


Dr. Pergola is the research director and has over 20 years experience in clinical research. He studied medicine in Buenos Aires, Argentina, at the Facultad de Medicina, Universidad del Salvador. He received his PhD in Pharmacology, graduating with honors from the University of Kansas Medical Center, Kansas City. After obtaining additional post-doctoral training in clinical research, he completed his internship, residency and fellowship at the University of Texas Health Science Center San Antonio.

He is currently a Clinical Associate Professor of the Division of Nephrology, UTHSCSA. He has authored two book chapters and 27 papers. In addition he has authored numerous abstracts presented at national and International Conferences. His research expertise includes cardiovascular physiology and pharmacology, and diabetic nephropathy.


Meet our Doctors

Mohammad Abdullah, M.D.
Fadi Abouzahr, M.D.
Flavio Alvarez,M.D.
Brigani Amante, M.D.
Julio Cesar Araujo, MD.
Lisa O. Cabrera, M.D.
Timoteo Cabrera, M.D.
Iliana Cardona, M.D.
Michael V. DeGaetano, D.O.
Iliana Fred-Miranda, M.D.
Ronald W. Hamner, M.D., FACP
Judith Hernandez, MDR.
Allen Holub, M.D.
Melissa R. Isbell, M.D., FACP
Brijesh Kapoor, M.D.
Parmish Kohli, M.D.
Luz Moreno, M.D.
Shadi Mourad, M.D.
Paraic J. Mulgrew, M.D., FACP
Aashish Kumar Pandey, M.D.
Jessica L. Pierce, M.D., Ph.D.
J. Arnaldo Ramirez, M.D.
Javier Rodriguez-Sanchez, M.D.
Navid Q. Saigal, M.D., FACP
Mohamed Shafiu, M.D.
Rashid Sharaf, M.D.
Matthias Simon, MD, PhD
Christine Toth, M.D
Johanna Urena, M.D.
Jose Antonio Velez, M.D.
V. Herman Villarreal, M.D.
Bushra Yusuf, M.D.
Fahim Zaman, M.D.
Carlos H. Zem, M.D