Dr. Robert Marquinez is an internist in Eagle Pass, Texas. He received his medical degree from University of the East College of Medicine and has been in practice for more than 20 years. Dr. Robert Marquinez has expertise in treating coronary artery disease, hypertension & high blood pressure, diabetes, among other conditions - see all areas of expertise. Dr. Robert Marquinez accepts Medicare, Aetna, Humana, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted.