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John Diaz Day, M.D., FAANS

Dr. Day received his medical degree from the University of Washington School of Medicine in 1989. He completed residency in neurological surgery at the University of Southern California (USC) Medical Center.

In 1995, Dr. Day joined the faculty of the USC School of Medicine in Los Angeles, where he was also Director of Neurological Surgery at the world-renowned House Ear Clinic. In late 2001, he returned to... Pittsburgh and Allegheny General Hospital as the Director of the Center for Cerebrovascular Surgery and Stroke, also serving on the faculty of Drexel University College of Medicine through 2004.

Dr. Day became Professor and Chairman of Neurosurgery at the University of Arkansas for Medical Sciences and led the department until his recruitment to University Medical Center in El Paso in 2023.

Dr. Day has authored 4 textbooks on neurosurgery and has published over 80 articles on neurosurgical topics.

Jaime Gasco, M.D., FAANS, FEBNS

Dr. Gasco has been practicing neurosurgery since 2011. He completed his undergraduate degree at the University of Valencia Medical School in Spain and then he went on to complete his neurosurgery residency at the University of Texas Medical Branch in Galveston, Texas.

Dr. Gasco is one of few neurosurgeons worldwide to be board-certified in two continents, America and Europe. Authored 2 books... and has published over 30 articles in the field of Neurosurgery.

He specializes in brain, spine and peripheral nerve surgery with emphasis on using the latest minimally invasive technologies including (MIS-TLIF, XLIF, ALIF, CoFlex, Intracept, OLIF) and pain management including ESI injections and blocks.

Dr. Gasco has successfully performed over 150 minimally invasive fusions, cutting the patient’s recovery time in half. Dr. Gasco is a leader in bringing endoscopic spine surgery to our region.

Harold K. Smith, M.D., FAANS

Dr. Harold K. Smith received his undergraduate degree from the University of Arkansas in Fayetteville, Arkansas, and medical degree from the University of Arkansas for Medical Sciences in Little Rock, Arkansas. Dr. Smith completed his residency in neurological surgery at the University of Mississippi Medical Center in Jackson, Mississippi.

Dr. Smith is board certified by the American Board of Neurological Surgery and has been practicing medicine ... since 1988.

Dr. Smith has extensive experience in spinal and intracranial neurosurgery, skull base, vascular, functional and tumor neurosurgery, as well as stereotactic radiosurgery and image guided robotically assisted spinal surgery.

Dr. Smith has pioneered the use of fluorescence guidance and awake techniques for the resection of complex brain tumors.