Dr. Sarah C. Shaw

Dr. Timothy Oskin joins Texas Health Physicians Group as a board-certified vascular surgeon with 24 years of experience. He acted as division chief of vascular surgery at a busy regional health system, St. Luke's University Health Network, in Pennsylvania and New Jersey. In this role he acted as leader of the vascular program that grew from 3 hospitals to 12 facilities and started an independent medical school while overseeing 9 vascular surgeons as they developed a vascular fellowship. He focused on the improvement of quality patient care with the development of practice guidelines and protocols benchmarked by a national registry.Dr. Oskin earned his medical degree from Hahnemann University School of Medicine in Philadelphia. He then completed a general surgery residency at Washington Hospital Center in Washington, DC followed by specialty training in Vascular Surgery at Wake Forest University in Winston-Salem, NC. After joining a vascular practice in Pennsylvania, he returned to pursue further specialty training by completing an Endovascular Fellowship at the University of Maryland in Baltimore, MD. This has allowed Dr. Oskin to treat a broad range of vascular patients with a combination of medical, endovascular and/or surgical therapies to optimize their outcomes and quality of life.Dr. Oskin offers a vast experience in treatment of all vascular disorders with minimally invasive techniques. To maintain this high level of care he has acted as a principal investigator in numerous clinical trials in the treatment of cerebrovascular disease with minimally invasive stenting technologies, aortic aneurysmal disease with minimally invasive stent grafts and peripheral vascular disease with endovascular technologies. In addition, he served as adjunct clinical assistant professor of Surgery at Temple, Drexel and DeSales Universities which allowed him to educate upcoming medical students, surgical residents and physician assistants.Dr. Oskin remains active as a member of the American College of Surgery, the Southern Association of Vascular Surgery and the Society of Vascular Surgery. Dr. Oskin is rated as a Distinguished provider by MediFind in the treatment of Splenic Infarction. His top areas of expertise are Carotid Artery Disease, Arterial Embolism, Abdominal Aortic Aneurysm (AAA), Thoracic Aortic Aneurysm, and Carotid Artery Surgery.

Dr. Michelle Hagopian has been a board-certified general surgeon since 2017. She is fellowship-trained in surgical critical care and therapeutic oncology. Dr. Hagopian specializes in laparoscopic, endoscopic and robot-assisted surgeries for trauma/critical care patients of all ages. She has served on the medical staff of Texas Health Harris Methodist Hospital Fort Worth since 2020. A Texas native, Dr. Hagopian earned her medical degree from The University of Texas School of Medicine at San Antonio. She completed her general surgery residency at UT Southwestern Medical Center/Parkland Hospital in Dallas before going on to complete her surgical critical care fellowship at Baylor University Medical Center, also in Dallas. She has additional fellowship training in therapeutic oncology, during which she was devoted to researching new ways to improve the early detection, diagnosis and treatment of cancers. Dr. Hagopian is a member of the American College of Surgeons, Society of Critical Care Medicine and Texas Medical Association. Dr. Hagopian is rated as an Advanced provider by MediFind in the treatment of Splenic Infarction. Her top areas of expertise are Ogilvie Syndrome, Delirium, Retroperitoneal Inflammation, Gallbladder Removal, and Hip Replacement.

Dr. Mohammad Siadati is a board-certified general surgeon and Fellow of the American College of Surgeons. He began his medical career in 2001 with primary focus in the areas of laparoscopic and robotic surgeries, emergency/trauma surgery, and reoperative surgery for recurrent colorectal cancer and other conditions. Dr. Siadati relocated to the Dallas area from Indiana in 2007. In addition to his practice, he currently serves as trauma medical director for Texas Health Harris Methodist Hospital HEB.Dr. Siadati earned his medical degree from Indiana University School of Medicine (IUSM) in Indianapolis. Following medical school, he did a year of gastrointestinal surgery research at the Mayo Clinic in Rochester, Minn. before returning to Indianapolis for his general surgery residency at IUSM. After completing his residency, he remained at IUSM for a year to work in trauma and general surgery. Dr. Siadati is a member of the Texas Medical Association. He is married and has two sons and a daughter who keep him busy beyond the office. Dr. Siadati is rated as an Advanced provider by MediFind in the treatment of Splenic Infarction. His top areas of expertise are Delirium, Retroperitoneal Inflammation, Gallstones, Hernia Surgery, and Colostomy.