Dr. Frank Lieberman

Jan Drappatz, MD, is a neuro-oncologist, an associate professor at the University of Pittsburgh School of Medicine, and the director of the Neuro-oncology program at UPMC. Dr. Drappatz specializes in the treatment of primary and metastatic brain tumors and neurologic complications of cancer. Dr. Drappatz is highly rated in 27 conditions, according to our data. His top areas of expertise are Astrocytoma, Glioblastoma, Glioma, and Gliomatosis Cerebri.

Raul Nogueira, MD, specializes in stroke and is board-certified in neurology by the American Board of Psychiatry and Neurology. He practices at UPMC Stroke Institute at Mercy. Dr. Nogueira completed his medical degree and residency at Universidade Federal do Ceará followed by a residency and fellowship at Massachusetts General Hospital - Harvard Medical School. Dr. Nogueira is highly rated in 15 conditions, according to our data. His top areas of expertise are Stroke, Subarachnoid Hemorrhage, Fibromuscular Dysplasia (FMD), Thrombectomy, and Stent Placement.

Oscar Lopez, MD, FAAN, is a neurologist and serves as chief of the Division of Cognitive and Behavioral Neurology and director of the Alzheimer's Disease Research Center. He is also a professor of Neurology, Psychiatry, and Clinical and Translational Sciences at the University of Pittsburgh School of Medicine. He received his medical degree from the University of La Plata and completed his residency at Rivadavia Hospital, followed by his fellowship at UPMC.Dr. Lopez’s clinical interests include cognitive disorders of multiple etiologies, and his research interests include clinical symptoms and progression of Alzheimer’s disease and other dementias, biomarkers, and risk factors for Alzheimer’s disease in cognitively normal persons. He has published numerous articles in peer-reviewed journals and is a member of the American Academy of Neurology, the Royal Society of Medicine, the American Neurological Association, the American Society of Behavioral Neurology, and the International Psychogeriatric Association.View the full list of Dr. Lopez’s publications on PubMed. https://pubmed.ncbi.nlm.nih.gov/?term=Lopez%2C+OL. Dr. Lopez is highly rated in 11 conditions, according to our data. His top areas of expertise are Dementia, Alzheimer's Disease, Vascular Dementia, Memory Loss, and Carotid Artery Surgery.