Dr. Melissa L. Kirkwood

Carlos Timaran is a General Surgeon and a Vascular Surgeon in Dallas, Texas. Dr. Timaran is rated as an Elite provider by MediFind in the treatment of Acute Arterial Occlusion of Kidney. His top areas of expertise are Thoracic Aortic Aneurysm, Abdominal Aortic Aneurysm (AAA), Peripheral Artery Disease, Stent Placement, and Aneurysm Repair.

Gerardo Gonzalez-Guardiola, M.D., is an Assistant Professor in the Department of Surgery at UT Southwestern Medical Center. He specializes in vascular surgery, with a focus on complex aortic surgery, aortic graft infection, cerebrovascular revascularization, and limb salvage.Dr. Gonzalez-Guardiola earned his medical degree at the Ponce School of Medicine and Health Sciences in Puerto Rico. He completed a residency in general surgery at NewYork-Presbyterian Queens and received advanced training in vascular and endovascular surgery through a fellowship at UT Southwestern.He joined the UT Southwestern faculty in 2021.Dr. Gonzalez-Guardiola is a member of the American College of Surgeons and the Society for Vascular Surgery. In addition, he serves on the National Surgical Quality Improvement Program (NSQIP) Initiative for Decreasing Pneumonia and Ventilator Over 48 Hours Task Force.He has published several academic articles and delivered numerous lectures and presentations.In 2020 and 2021, he received UT Southwestern’s Pharos Excellence in Surgical and Mentorship Award. Dr. Gonzalez is rated as an Advanced provider by MediFind in the treatment of Acute Arterial Occlusion of Kidney. His top areas of expertise are Median Arcuate Ligament Syndrome (MALS), Peripheral Artery Disease, Arterial Insufficiency, Thrombectomy, and Carotid Artery Surgery.

Khalil Chamseddin, M.D., is a Clinical Assistant Professor in the Department of Surgery at UT Southwestern Medical Center. He specializes in advanced peripheral arterial disease, complex aortic aneurysm repair, cerebrovascular disease, and dialysis access creation and maintenance.Dr. Chamseddin earned his medical degree at UT Southwestern, where he also completed a residency in general surgery and gained advanced training through a fellowship in vascular surgery. He joined the UT Southwestern faculty in 2022.The author of several peer-reviewed articles and presentations related to his areas of clinical interest, Dr. Chamseddin's recent publications include a chapter in Cardiovascular Medicine and Surgery.In 2022, Dr. Chamseddin received the Peter B. Samuels Award from the Society for Clinical Vascular Surgery. Dr. Chamseddin is rated as an Advanced provider by MediFind in the treatment of Acute Arterial Occlusion of Kidney. His top areas of expertise are Arterial Insufficiency, Peripheral Artery Disease, Median Arcuate Ligament Syndrome (MALS), Mesenteric Artery Ischemia, and Thrombectomy.