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College of
Health Sciences

Julie Byerley, MD, MPH

Julie Byerley
President, Geisinger College of Health Sciences; Dean, Geisinger Commonwealth School of Medicine; Executive Vice President and Chief Academic Officer, Geisinger
jbyerley1@geisinger.edu

Gerald V. Maloney

Gerald Maloney
Associate Dean for Clinical Affairs; Chief Medical Officer, Geisinger System Hospitals

William B. Jeffries

John Arnott
Provost, Geisinger College of Health Sciences and Vice Dean for Education, Geisinger Commonwealth School of Medicine
wjeffries1@geisinger.edu

Valencia P. Walker, MD, MPH

Vice Dean for Health Equity and Inclusion
vwalker1@geisinger.edu

John Arnott, PhD

John Arnott
Chair, Department of Medical Education
jaarnott1@geisinger.edu

Jennifer Koestler, MD

Jennifer Koestler
Associate Dean for Medical Student Education
jlkoestler@geisinger.edu

Sonia Lobo, PhD

Sonia Lobo
Associate Dean for Research and Scholarship 
slobo1@geisinger.edu

Andrea K. DiMattia, EdD

Andrea Dimattia
Vice Provost for Education Administration
akdimattia@geisinger.edu

Michelle L. Schmude, EdD

Michelle Schmude
Vice Provost for Enrollment Management
mlschmude1@geisinger.edu

Tanja J. Adonizio, MD

Tanja Adonizio
Vice Provost for Student Affairs and Associate Dean for Student Affairs
tkadonizio1@geisinger.edu

Burt Cagir, MD

Burt Cagir
Regional Associate Dean
bcagir@geisinger.edu

Mark Olaf, DO

Mark Olaf
Regional Associate Dean, Vice Chair of Education, Emergency Medicine
mfolaf@geisinger.edu

Lisa Holtz, MD

Regional Associate Dean
lvholtz@geisinger.edu

Julie Xanthopoulos, MD, PhD

Julie Xanthopoulos
Regional Associate Dean
jxanthopoulos@geisinger.edu

Dominick Zampino, DO

Dominick Zampino
Regional Associate Dean
dzampino@geisinger.edu

School of Medicine institutes

  • Alfred S. Casale, MD, Chair of the Geisinger Heart Institute; Chief Medical Officer for Geisinger Surgical; Chair of Cardiothoracic Surgery
  • Sandra Culbertson, MD, Chair of the Geisinger Women and Children’s Institute
  • Neil Holland, MD, Chair of the Geisinger Neuroscience Institute
  • Kenric Maynor, MD, Chair of the Geisinger Medicine Institute; Chair of Internal Medicine
  • Rajiv Panikkar, MD, Chair of the Geisinger Cancer Institute
  • Michael Suk, MD, JD, Chair of the Geisinger Musculoskeletal Institute
  • Denise Torres, MD, Chair of the Geisinger Surgery Institute
  • Myra L. Wilkerson, MD, Chair of the Diagnostic Medicine Institute; Chair of the Department of Laboratory Medicine
  • Jonathan Welch, MD, Chief Medical Officer for Population Initiatives

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