AHN Neuroscience Institute Physician Spotlight

SAP Partner | <b>Allegheny Health Network</b>

Timothy Quezada, DO

Dr. Timothy Quezada is a neurologist who treats patients for brain disorders. He is clinically interested in epilepsy and seizure disorders. He sees patients ages 18 and older.

Dr. Quezada earned a medical degree from Lake Erie College of Osteopathic Medicine, in Erie, Pennsylvania. He completed a residency and his fellowship in neuropsychology at AHN Allegheny General Hospital in Pittsburgh, Pennsylvania. He is certified by the American Board of Psychiatry and Neurology.


Stuart Silverman, MD

Dr. Stuart Silverman is a neurologist with AHN Neuroscience Institute, specializing in diagnosing, treating, and managing disorders and infections of the brain and nervous system. He applies best-practice techniques and processes to help ensure long-term results with the neurology patient. Dr. Silverman has over 30 years experience in treating multiple sclerosis patients.

Dr. Silverman went to medical school at Georgetown University in Washington, D.C., where he also completed his residency.

He is certified by the American Board of Psychiatry and Neurology. He sees patients ages 18 and older.


Barbara McManus, MD

Barbara McManus, MD, is a neurologist with AHN Neuroscience Institute specializing in neurology. Her clinical interests include Alzheimer’s Disease and memory disorders. She sees patients from ages 18 and older.

Barbara received a Bachelor of Arts in Biochemistry from Colorado College in Colorado Springs, Colorado. She received her MD from University of North Dakota School of Medicine and Health Sciences in Grand Forks, North Dakota. Barbara completed her residency and fellowship at University of Minnesota in St. Paul, Minnesota.

She is certified by the American Board of Psychiatry and Neurology. Barbara has been published in numerous places for her work with neurological disorders. She has also done various research work in Alzheimer’s as well as epilepsy.


Alexander Whiting, MD

Dr. Whiting is a neurosurgeon and director of epilepsy surgery for AHN’s Neuroscience Institute. He specializes in state-of-the-art epilepsy treatments, including stereoelectroencephalography (SEEG), seizure focus resections, laser ablations, vagal nerve stimulation, and responsive neurostimulation. Additionally, he has clinical interests in complex spine and brain disorders, and offers a range of surgical options and interventions for these conditions.

Dr. Whiting completed his residency at the Barrow Neurological Institute in Phoenix, Arizona. He completed his fellowship in epilepsy surgery at the Cleveland Clinic in Cleveland, Ohio, and was awarded the American Epilepsy Society’s prestigious Young Investigator Award.

Dr. Whiting cares for patients ages 18 and older. He provides minimally invasive surgical options for a wide range of neurosurgical disorders. His practice philosophy includes utilizing proper intervention with each individual patient to achieve optimal treatment outcomes.


Matthew Shepard, MD

Dr. Shepard is a neurosurgeon with AHN Neuroscience Institute. He specializes in surgical removal of cancerous and benign tumors of the brain, skull, and spine, as well Gamma Knife radiosurgery and awake craniotomies. He offers corrective surgical options to address conditions such as Chiari malformation, stenosis, herniated discs, radiculopathy, and myelopathy.

Dr. Shepard earned his medical degree from Tufts University School of Medicine in Boston, Massachusetts. His surgical residency was completed at the University of Virginia Health System in Charlottesville, Virginia. His Neurosurgical Oncology fellowship was then completed with MD Anderson Cancer Center in Houston, Texas, where he applied special focus to spinal oncology and minimally invasive skull base, in addition to his general neurosurgical oncology track.

His practice philosophy is one that holds strong believe in customized patient care. Because each patient is different, Dr. Shepard presents surgical and nonsurgical options tailored to honor the patient’s values, maximize their quality of life, and achieve the best treatment outcomes.

He serves as Vice Chair for Young Neurosurgeons – AANS and CNS Tumor Section and gives his time to a few other professionally related committees. He also serves on the editorial board of the Journal of Neuro-Oncology. You can make an appointment with Dr. Shepard at Allegheny General Hospital or St. Clair Hospital in the south hills.


Chen Xu, MD

Dr. Xu is a neurological specialist with AHN Neuroscience Institute. He specializes in minimally invasive spine surgery and robotic spine surgery as solutions to herniations, myelopathy, stenosis, neuro-trauma, neuropathy, scoliosis, and neuralgia. He also provides treatments for back, leg, and neck pain as well as for cervical disorders, spinal-based issues, and nerve complications.

Dr. Xu earned his medical degree from Drexel University College of Medicine in Philadelphia, Pennsylvania. His residency was completed AHN Allegheny General Hospital in Pittsburgh, PA, where he also continued to complete a fellowship in Complex Spine Surgery.

He is a widely published contributor to several journals and book chapters and has also given numerous presentations pertaining to his specialties. Dr. Xu’s philosophy is to take an individual approach to every patient so they can improve their quality of life quickly and safely. Patients can make an appointment with him at Allegheny General Hospital or at his office in Washington, Pennsylvania.