Department of Neurosurgery

Faculty & Staff

Below, you can find links to staff galleries, with brief faculty profile introductions following those. To read complete faculty profiles, choose a link on the left hand side under "Section Links" or click "Read More" on the profile of your choice below.

Staff Galleries

David F. Jimenez, MD, FACS, Chairman

David F. Jimenez, MD, FACSInternationally recognized pediatric neurosurgery expert David F. Jimenez, MD, serves as the Chairman and a Professor of the Department of Neurosurgery at The University of Health Science Center at San Antonio. Prior managerial and academic appointments include 12 years of both neurosurgery director and tenured professorial positions at the University of Missouri-School of Medicine and University of Missouri Hospital and Clinics (Columbia). His areas of expertise in the surgery suite and research lab have always focused on both pediatric and general neurosurgery.
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Viktor Bartanusz, MD, PhD

Viktor Bartanusz, MD, PhD Dr. Viktor Bartanusz graduated with honors from the Medical Faculty at the Comenius University in Bratislava, Czechoslovakia. Attracted by research he first started his PhD postgraduate program at the Institute of Experimental Endocrinology of the Slovak Academy of Sciences in Bratislava. His research activity was concentrated in the field of neuroendocrinology, blood-brain barrier and circumventricular organs of the brain.
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Lee A. Birnbaum, MD

Lee Birnbaum, MDLee Birnbaum, MD, MS, is a board certified neurologist in the Departments of Neurology and Neurosurgery at UTHSCSA. He is also board certified in the subspecialty of vascular neurology. In addition to his clinical neurology training, Dr. Birnbaum completed a two-year endovascular neurosurgery fellowship. Dr. Birnbaum is the interim Director of Stroke at UTHSCSA, holder of the Ross J. Sibert Research Fund Distinguished Chair, and only endovascular neurologist in San Antonio. His dual training in neurology and endovascular neurosurgery gives him a unique understanding in the realm of vascular disorders of the nervous system.
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Jean-Louis R. Caron, MD, FRCS(c), FACS

Jean-Louis R. Caron, MD, FRCS(c), FACSJean-Louis R. Caron, MD, FACS, Professor at the Department of Neurosurgery at The University of Texas Health Science Center at San Antonio, is widely recognized as an expert in cerebrovascular surgery. His research interests include innovative therapies for neurovascular disorders. Moreover, he has an interest in radiosurgery and complex spinal surgery.
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Franklin M. Epstein, MD

Franklin M. Epstein, MDDr. Epstein is currently a long-standing member of the American College of Surgeons, the Congress of Neurological Surgeons, the American Association of Neurological Surgeons, the American Medical Association and AOA. His many honors and awards include the Radiology Annual Award from Peter Bent Brigham Hospital, James E. Tower Award, the Glover C. Arnold Award and the Solomon Shapiro Award from the New York University School of Medicine.
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John R. Floyd II , MD

John R. Floyd II , MDDr. Floyd, Assistant Professor for the Department of Neurosurgery, began his medical career in high school after obtaining early acceptance to The University of Alabama School of Medicine at the age of eighteen. Prior to matriculating, Dr. Floyd did finish his undergraduate degree (summa cum laude), studied public health policy and clinical trial design at the University of Adelaide, South Australia on a Rotary International Scholarship.
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Rachel Garvin, MD

Rachel Garvin, MDDr. Garvin is a board-certified emergency physician fellowship trained in neurocritical care.  She specializes in the emergency and critical care management of patients with disorders of the brain and spine.  Her emergency medicine background makes her one of a very small number of physicians in the country with this combination of specialty training.
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Christopher Koebbe, MD

Christopher Koebbe, MDDr. Koebbe, an active duty lieutenant colonel in the U.S. Air Force, is the only dual-trained vascular neurosurgeon in San Antonio. He provides comprehensive evaluation and treatment of vascular disorders of the nervous system via endovascular and/or opn surgical techniques. Raised an Air Force “brat” from coast to coast, Dr. Koebbe completed his pre-medicine studies graduating magna cum laude as a member of the Jesuit honor society Alpha Sigma Nu from Xavier University in Cincinnati, OH.
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Alexander M. Papanastassiou, MD

Alexander M. Papanastassiou, MDAlexander M. Papanastassiou, MD, is an Assistant Professor in the Department of Neurosurgery at the University of Texas Health Science Center San Antonio. His areas of expertise are general neurosurgery and surgery for epilepsy, trigeminal neuralgia, and movement disorders including Parkinson’s disease.
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Augusto Parra, MD, MPH, FAHA

Augusto Parra, MD, MPHDr. Augusto Parra is faculty at the Department of Neurosurgery and Director of the Neuroscience ICU at UTHSCSA. Prior to his academic appointment at UTHSCSA, Dr. Parra held several academic appointments in the Departments of Neurology and Neurosurgery at the Medical College of Pennsylvania, and Columbia University, College of Physicians and Surgeons were he holds an adjunct academic position in the Department of Neurology.
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Ali Seifi, MD, FACP

Ali Seifi, MDAli Seifi, MD, FACP is an assistant professor in the Department of Neurosurgery at the University of Texas Health Science Center San Antonio who has served as an attending physician since 2012. He oversees the care of patients in University Hospital’s state-of-the-art Neurointensive Care Unit (NICU), as well as leads the unit’s daily operations. This NICU is the only intensive care unit in the region fully dedicated to the care of neurologically ill patients and staffed with physicians and nurses specially trained in the care of patients with brain, spine, and nervous system diseases. Dr. Seifi received his medical degree from Shiraz University of Medical Sciences (SUMS), where he graduated with honors in 1996. He did his first residency in Anesthesiology and Critical Care at SUMS and then did his second residency in Internal Medicine at New Jersey’s AtlantiCare Medical Center. Finally, he did two years of an extensive Neurocritical Care fellowship at Thomas Jefferson University in Philadelphia, a well-known center for Neurosciences. He is triple board certified in Anesthesiology, Internal Medicine and Neurocritical Care.
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Ahmed Shakir, MD

Ali Seifi, MDAhmed R. Shakir MD, is an Assistant Professor in the Department of Neurosurgery at the University of Texas Health Science Center San Antonio. His areas of expertise are general neurosurgery and spine surgery.
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