Dr. Sobia Nasir, MD


Dr. Manuel Mercado, MD


Dr. Maximiliano Hernandez, MD


Dr. Subramaniam Jagadeesan


Dr. Sathiyaraj George

Dr. Sathiyaraj George is a board-certified Internist practicing in Mission since 1997. He received his undergraduate medical degree (MBBS) from Madurai Medical College, Madurai, India in 1987. He completed his postgraduate medical degree (M.D.) from Dr. M.G.R. Medical University, Chennai, India in 1992.

After completing his Internal Medicine Residency at St. Luke’s Medical Center, Cleveland, Ohio, Dr. George came to the Rio Grande Valley in 1997. He was working as the Medical Director at Nuestra Clinica Del Valle, a community health center serving underprivileged patients in the Hidalgo County. He started his private practice in 2001 with a mission to provide compassionate, comprehensive and affordable health care to the Rio Grande Valley Community. Now the practice has grown as Valley Internal Medicine Associates consists of 3 board-certified internists and 3 nurse practitioners.

Dr. George is also board-certified in Sleep Medicine. He was awarded the FACP (Fellow of the American College of Physicians) in 2017, a mark of distinction representing the pinnacle of integrity, professionalism and contribution to the community beyond practicing medicine. He enjoys teaching medical students and residents. His hobbies include reading, playing chess, hiking and traveling.


Dr. Anu Swarup


Dr. Socrates Garrigos

Dr. Socrates A. Garrigos has been a practicing physician for 23 years and has served the Rio Grande Valley since 1997. He began his graduate studies at the Autonomous University of San Luis Potosi and completed his internship at the Mayo Graduate School of Medicine. Following his internship, Dr. Garrigos completed his residency in Internal Medicine at Maricopa Medical Center in Arizona.

Having completed his residency, Dr. Garrigos worked as an Associate Staff Physician by the National Emergency Services at the outpatient Clinic of Raymond W. Bliss Army Community Hospital for a year, serving both personal in active duty and civilian service. In the following years, Dr. Garrigos worked as a hospitalist for several hospitals in the Rio Grande Valley region.

In 2003, Dr. Garrigos established his private practice under the name Socrates A. Garrigos MD PA. Here, he provides diagnosis and treatment of the local adult population at area hospitals, as well as outpatient diagnosis, management and treatment of Hidalgo county population. Dr. Garrigos has proudly been a member of the ACO since 2016 and is honored to serve as a provider.

Professional medical memberships include the Mayo Alumni Association and diplomat of the American Board of Internal Medicine.


Dr. Rene Vela


Dr. Alcides Amador


Dr. Alfredo Lopez, Jr.

Dr. Alfredo Lopez has served as a leader and a mentor for the medical community. He began his dedication at Pan American University where he obtained a Bachelor of Science in Biology. He went on to attend the University of Texas Health and Science Center San Antonio Medical School.  Upon graduation he completed his residency program at UTHSCSA McAllen Family Practice Residency Program.  Dr. Lopez is Board Certified by the American Board of Family Practice, Diplomat.  He practices as a solo private primary care physician in McAllen, Texas.

Dr. Lopez has established himself as an active mentor to future practitioners, serving as an Assistant professor for the UTHSCSA and McAllen Family Practice Residency program.  In addition, he has been a formal preceptor, leading rotations and presentations in practice management, OB/Med, and conferences with residents.  This leadership has not been limited to students, but also review of issues related to improving faculty teaching methods.

In addition to local facility projects, Dr. Lopez has participated in numerous research projects including Healthy People 2000 and a clinical project aimed at improving patient compliance.

Professional affiliations and memberships include American Medical Association, Texas Medical Association, American Academy of Family Physicians, Texas Academy of Family Physicians, Texas Statewide Family Practice Preceptorship Program, Hidalgo-Starr County Medical Society, and the Border Health Caucus

Hospital affiliations include Doctors Hospital at Renaissance, McAllen Medical Center, and the McAllen Heart Hospital.