Professor and Chair
Department of Neurosurgery
Penn State University

Former Chair, ABNS
Former Chair, Vascular Section, AANS/CNS

Senior Vice-President, Academic Practices
Interim Chief Medical Officer, Milton S Hershey Medical Center
Distinguished Professor Department of Neurosurgery
Penn State University

Former President, AANS
Former President, SNS

Moderator-in-chief
Neurosurgery Research Listserv
Adjunct Associate Professor
Department of Neurosurgery
Penn State University

Consultant Neuro-oncologist
Professor, Department of Neurosurgery
Professor, Department of Medicine
Penn State University

Vice Dean and Physician-in-Chief at Johns Hopkins All Children's Hospital
Director, Institute for Brain Protection Sciences
Professor of Neurosurgery
Johns Hopkins University

Professor
Department of Neurosurgery
Penn State University

Neurosurgeon
Department of Neurosurgery
Cleveland Clinic

Consultant Neurosurgeon
Chair, Spine Surgery Section
NU Hospital Group
Gothenburg

Chair, Research Committee,
EANS

Professor and Chair
Department of Neurosurgery
University of Bari