Rio Grande Valley(RGV) ACO

Welcome to the Rio Grande Valley Accountable Care Organization (RGV ACO) website. The health providers that make up this organization put service first and believe in patient-centered practice.

RGV ACO comprises various clinics in locations throughout Bexar, Cameron, and Hidalgo counties in South Texas. We serve the populations of Donna, Elsa, Harlingen, Helotes, McAllen, Mercedes, Mission, San Antonio, Weslaco and the surrounding communities.

Leading physicians include: Charity Abreu-Lawrence, MD, Amer Alanbari, MD, Abdulrahman Albustamy, MD, Hector Amaya, MD, Daisy Arce, MD, Alejandro Arizmendi, MD, Mahmoud Barazi, MD, Adriana Cadena-Martinez, MD, Charles Cervantes, MD, Daniel Contreras, MD, Melecia Fuentes, MD, Steven Havener, MD, J. Matthew Johnson, MD, Nelson Kalaf, MD, Amita Kumar, MD, Sam Landero, MD, Jose Lares, MD, Yolanda Marcos, MD, Jorge Martinez, MD, Sumyra Mehkri, MD, Mandie Navarro, MD, Pedro McDougal, MD, Alfonso Ochoa, MD, Solomon Paley, MD, Jose Peña, MD, Pedro Peñalo, MD, Rebecca Quiroz, MD, Guillermo Rocha, MD, Jose Sandoval, MD, Julio Saviñon, MD, Cecil Stehr, DC, and Monzer Yazji, MD.

The physicians at these clinics are caregivers, focused on preventative health care through communication and education.


  • Abreu Adult Clinic
  • Charles R. Cervantes, Jr, MD
  • Donna Medical Clinic
  • Donna Day and Night Clinic
  • Elsa Medical Clinic
  • Family Health Center of Mission
  • Guillermo I. Rocha, MD
  • Hector G. Amaya, MD, PA
  • Helotes Medical Clinic
  • Main Family Practice
  • Marcos Medical Care
  • Mercedes Medical Clinic
  • Mid Valley Adult Specialists, PA
  • Monzer H. Yazji, MD & Associates
  • Nelson Kalaf, MD
  • Quiroz Adult Medicine Clinic
  • Rio Grande Medicine
  • Rio Grande Valley Adult & Internal Medicine Specialists
  • Summit Family Medicine
  • Tierra Santa Family Medicine
  • Weslaco Family Care Center
  • Weslaco Medical Clinic

What is an ACO and how does it work?

An Accountable Care Organization is a program sponsored by the Centers for Medicare and Medicaid Services (CMS) that focuses on enhanced care coordination. CMS encourages participating health providers to commit to providing a positive patient experience that results in improved health outcomes and lowered health care expenses for their Medicare Fee-For-Service patient population.

Please visit or call 1-800-MEDICARE (1-800-633-4227) (TTY users should call1-877-486-2048) for general questions or additional information about Accountable Care Organizations. For Physician Compare