Isaac Lopez has proudly served the Rio Grande Valley community for nearly a decade as a trusted Physician Assistant at Cooper Internal Medicine. A graduate of the University of Texas Rio Grande Valley, he brings a compassionate, relationship-centered approach to every patient encounter.

Combining clinical expertise with a passion for education, Isaac empowers patients to understand their conditions and take an active role in their long-term wellness.

With more than 20 years in medicine and nearly two decades at Cooper Internal Medicine, Lucy Saldana is known for her compassion, thoroughness, and dedication to patient education. Her broad experience across family practice, pediatrics, OB/GYN, and internal medicine allows her to care for entire families—often spanning multiple generations. Lucy believes effective care begins with understanding and empowers her patients to take an active role in their health.

A Rio Grande Valley native with a background in endocrinology and biomedical research, Irving Salinas brings both scientific insight and empathy to his role at Cooper Internal Medicine. Fluent in English and Spanish, he helps patients understand complex health concepts in simple, relatable ways—promoting trust, education, and informed decision-making. Irving combines his evidence-based training with a holistic approach to support each patient’s path toward long-term wellness. 

A board-certified Family Nurse Practitioner fluent in English, Spanish, and Tagalog, Ellinor Sanchez brings a global perspective and culturally sensitive approach to patient care. Having lived across three continents, she understands how diverse experiences shape health and wellness. With over a decade of nursing experience across emergency, critical care, and transitional settings, Ellinor emphasizes evidence-based, holistic care that integrates body, mind, and spirit. She empowers patients and families through education, lifestyle guidance, and genuine compassion.