About
Dr. Oscar Aguilar is a board-certified internist and cardiologist practicing concierge medicine in El Paso, Texas. He earned his Doctorate of Medicine from Instituto Tecnológico de Estudios Superiores de Monterrey in 1994. He then completed an internship and internal medicine residency at Kansas University Medical School in Kansas City. He pursued two fellowships at Baylor College of Medicine, training in cardiovascular diseases from 1998 to 2001 and interventional cardiology from 2001 to 2002. In 2018, he earned a Master of Public Health from Southern New Hampshire University.
Dr. Aguilar holds certifications from the American Board of Internal Medicine, the Board of Nuclear Cardiology, the Board of Cardiac CT, and the Society of Heart Attack Prevention and Eradication. He further trained through fellowships in metabolic medicine and nutrition and hormone replacement therapy. The National Wellness Institute recognizes him as a certified Wellness Practitioner. He also holds certification in Obesity Medicine. Dr. Aguilar is passionate about insulin resistance, prediabetes, and the role of nutrition in reversing chronic disease. He serves as an Assistant Professor at Texas Tech Health Science Center Medical School and as Director of Texas Integrative Medicine and Cardiology. He speaks English, Spanish, and conversational Italian. Texas Monthly named him a Texas Super Doctor every year from 2006 through 2018.
Education & Training
Undergraduate
Instituto Tecnologico de Monterrey, Monterrey, NL, Mexico - Medical Doctor 1994
Medical School
Instituto Tecnológico de Estudios Superiores de Monterrey, Monterrey, Nuevo Leon, Mexico - Doctorate of Medicine 1994
Residency
Internal Medicine, Kansas University Medical School, Kansas City, KS (1996-1998)
Fellowship
Cardiovascular Diseases, Baylor College of Medicine, Houston, TX (1998-2001); Interventional Cardiology, Baylor College of Medicine, Houston, TX (2001-2002); Fellowship in Metabolic Medicine and Nutrition; Fellowship in Hormone Replacement Therapy
Additional Training
Master of Public Health, Southern New Hampshire University, Manchester, NH (2018); Internship, Kansas University Medical School, Kansas City, KS (1995-1996)
Certifications
Conditions Treated
Who is Dr. Aguilar right for?
Dr. Aguilar is a strong fit for adults focused on preventing chronic disease before it takes hold. Patients managing obesity, prediabetes, insulin resistance, or early cardiovascular risk benefit from his metabolic and nutritional expertise. He also serves patients with established heart disease who want a physician trained in both interventional cardiology and preventive care. Those concerned about cognitive decline, including Alzheimer's and Parkinson's risk, will find his clinical focus directly relevant. Patients who want direct, after-hours access to their physician will appreciate his availability and communication style.
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Frequently Asked Questions
Dr. Aguilar focuses on obesity, prediabetes, insulin resistance, diabetes, cardiovascular disease, and cognitive decline including Alzheimer's and Parkinson's disease. He also treats arthritis and hormone-related conditions. His training spans internal medicine, interventional cardiology, metabolic medicine, and nutrition, allowing him to address multiple interconnected chronic conditions.
Yes. Dr. Aguilar holds board certification from the American Board of Internal Medicine with a specialty in cardiovascular diseases. He also holds certification from the Board of Nuclear Cardiology, the Board of Cardiac CT, and the Society of Heart Attack Prevention and Eradication. The National Wellness Institute certifies him as a Wellness Practitioner, and he holds certification in Obesity Medicine.
Dr. Aguilar earned his Doctorate of Medicine from Instituto Tecnológico de Estudios Superiores de Monterrey in Mexico. He completed his internal medicine residency at Kansas University Medical School and his cardiology and interventional cardiology fellowships at Baylor College of Medicine in Houston. He later earned a Master of Public Health from Southern New Hampshire University in 2018.
Dr. Aguilar prioritizes reversing disease rather than only managing symptoms with medication. He focuses on nutrition, insulin resistance, and metabolic health as foundational tools for disease prevention. He pursues proactive care, working to identify and address conditions like prediabetes and cardiovascular risk before they progress.
Yes. Dr. Aguilar trained in both cardiovascular diseases and interventional cardiology at Baylor College of Medicine. He is certified by the American Board of Internal Medicine in cardiovascular diseases and holds certifications in nuclear cardiology and cardiac CT. He also holds membership in the American College of Cardiology and the American Heart Association.
Yes. Dr. Aguilar holds an Obesity Medicine certification and completed a fellowship in metabolic medicine and nutrition. He views nutrition as central to health and disease. He helps patients address the underlying metabolic factors driving weight gain and chronic illness, rather than treating symptoms in isolation.
Dr. Aguilar speaks English and Spanish fluently. He also speaks conversational Italian.
Yes. Dr. Aguilar holds affiliations at The Hospitals of Providence Sierra Campus, Providence Children's Hospital, Telehealth Memorial Hospital, Telehealth Sierra Medical Center, and University Medical Center.
Yes. Texas Monthly named Dr. Aguilar a Texas Super Doctor each year from 2006 through 2018. The Best Doctors Association recognized him as one of the Best Doctors in the USA from 2010 to 2019. The City Magazine also named him Best Doctor in El Paso in 2018.
Doctor profile last updated June 6, 2026