Clinical faculty

Zarina S. Ali, MD, MS, FAANS
Chief of Neurosurgery, Penn Presbyterian Medical Center
Vice Chair, Clinical Operations and Quality Improvement
Co-Director, Penn Nerve Center
Associate Professor of Neurosurgery

John Arena, MD
Assistant Professor of Neurosurgery at the Hospital of the University of Pennsylvania

Brendan Judy, MD
Assistant Professor of Clinical Neurosurgery

Neil R. Malhotra, MD
Director, Epilog Quality Improvement Initiative
Co-Director, Restorative Spinal Research (ReST) Lab
Professor of Orthopaedic Surgery
Professor of Neurosurgery at the Hospital of the University of Pennsylvania

Paul Marcotte, MD
Associate Professor of Neurosurgery at the Hospital of the University of Pennsylvania
Associate Professor of Orthopaedic Surgery

Kyle Brandon Mueller, MD
Assistant Professor of Clinical Neurosurgery

Ali K. Ozturk, MD
Assistant Professor of Neurosurgery at the Pennsylvania Hospital
Director, Complex Spine Surgery Fellowship
Director of Adult Scoliosis and Deformity Surgery, Neurosurgery

James M. Schuster, MD, PhD
Professor of Neurosurgery at the Hospital of the University of Pennsylvania
Director of Neurotruama
Director of Education, Department of Neurosurgery

Berje Shammassian, MD, MPH, FAANS
Assistant Professor of Neurosurgery at the Presbyterian Medical Center of Philadelphia
Assistant Professor of Neurology

John Shin, MD
Director, Penn Medicine Spine Center
Division Head, Spine and Peripheral Nerve Surgery
Guggenheim Family Thomas W. Langfitt, M.D. Professor

Ahilan Sivaganesan, MD
Director, Minimally Invasive Spine Surgery

Michael Spadola, MD
Assistant Professor of Clinical Neurosurgery

Connor Wathen, MD
Assistant Professor of Clinical Neurosurgery

William C. Welch, MD, FACS, FICS
Vice Chair of Faculty Affairs, Department of Neurosurgery
Chief, Department of Neurosurgery at Pennsylvania Hospital
Professor of Orthopaedic Surgery
Frederick A. Simeone Professor in Neurosurgery

Eric L. Zager, MD
Neurosurgical Professor in Academic Excellence