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Our Physicians and Surgeons

Neurosurgeons

Larry Armstrong, D.O. FACOS, FACS 
Brain Tumor, Cerebrovascular and Spine Surgery
Dr. Armstrong earned his medical degree from the University of North Texas Health Science Center in Fort Worth and completed a residency at Ohio University College of Osteopathic Medicine. Dr. Armstrong also completed a fellowship at the University of Arizona Health Sciences Center in Tucson. He is board certified in neurosurgery.
Brandon Evans, M.D. 
Brain Tumor, Cerebrovascular and Spine Surgery
Dr. Evans received his medical degree from the University of Oklahoma College of Medicine at Oklahoma City, and he completed his residency at UCLA, where he was Chief Resident. Dr. Evans is a member of the American Association of Neurological Surgeons and Congress of Neurological Surgeons – Section on Tumors.


Neurologists and Specialists


Margaret Tremwel, M.D., Ph.D.
 
Stroke Neurology
Dr. Tremwel practices as a stroke neurologist and serves as medical director of Washington Regional Medical Center’s Comprehensive Stroke Program. Dr. Tremwel, who has been in practice as a stroke neurologist since 2001, earned her medical degree from the University of Florida, where she also completed her neurology residency. She completed a fellowship in cerebrovascular disease and stroke from the University of California, Los Angeles, and is board certified in neurology and vascular neurology by the American Board of Psychiatry and Neurology. Dr. Tremwel joined Washington Regional in 2014 as the medical center expanded its neuroscience services to include advanced treatment options not available elsewhere in the region.

Jay Hinkle, M.D.
Vascular Neurology
A native of Fort Smith, Dr. Jay Hinkle has returned to Arkansas after completing his medical training to follow in the physician footsteps of his father, an internal medicine specialist in the River Valley. He joins the comprehensive stroke care program at Washington Regional, the first healthcare provider in Benton, Boone, Carroll, Madison and Washington counties to earn advanced certification as a Primary Stroke Center. Dr. Hinkle earned his medical degree from the University of Arkansas for Medical Sciences, where he also completed a residency in neurology and was named chief resident. He completed a fellowship in cerebrovascular disease and stroke at Johns Hopkins University and is board certified in neurology and vascular neurology by the American Board of Psychiatry and Neurology. Dr. Hinkle joins Margaret Tremwel, MD/PhD, who has been medical director of the Washington Regional Stroke Care Team since 2014. .

Brent R. Weilert, M.D.
Dr. Weilert is fellowship trained and board certified in Pain Management, and is a graduate of University of Kansas Medical School. Dr. Weilert completed his anesthesia residency at Scott and White Memorial Hospital at Texas A&M University Health Science Center and his pain management fellowship at University of Oklahoma Health Sciences Center.