Experienced Physicians Leading Reliable Clinical Research
Our principal investigators bring together clinical excellence, academic experience, and research leadership to support safe, organized, and sponsor-ready study execution.
Roberto Valledor, MD
Board-Certified Family Medicine Physician · Diplomate, American Board of Obesity Medicine
Roberto Valledor, MD, is a board-certified Family Medicine physician and a Diplomate of the American Board of Obesity Medicine. With extensive expertise in primary care and metabolic health, he is an active member of the Obesity Medicine Association, The Obesity Society, and the Texas Medical Association.
With over four years of dedicated experience in clinical research, Dr. Valledor has successfully conducted more than 40 clinical trials across liver disease, COPD, hypertriglyceridemia, migraine, gout, diabetes, COVID-19, RSV, and vaccine development.
By balancing private practice with clinical research leadership, Dr. Valledor remains at the forefront of medical innovation, ensuring every study is conducted with safety, integrity, and operational precision.
Daniel Ibarias Paz, MD
Board-Certified Family Medicine Physician · Core Faculty Member
Daniel Ibarias Paz, MD, is a board-certified Family Medicine physician dedicated to providing high-level medical care and advancing clinical education. A 2013 graduate of the Universidad Autónoma de Chiapas, he brings a global perspective to his practice.
Dr. Ibarias Paz currently serves as a core faculty member for the Family Medicine residency program at Mission Regional Medical Center, following his own training at UTRGV Family Medicine Residency Program at McAllen Medical Center from 2021 to 2024.
His active hospital medicine experience across Mission Regional Medical Center, Knapp Medical Center, McAllen Medical Center, and Edinburg Regional Medical Center provides strong clinical judgment and comprehensive patient care for research protocols.