Faculty
Leadership
- Christopher J. Wilson, MD, FACEP, FAAEM, Program Director, Emergency Medicine Residency
- Chadd K. Kraus, DO, DrPH, FACEP, Director, Emergency Medicine Research and Associate Program Director, Emergency Medicine Residency
- Jason R. Burkett, DO, FACEP, Assistant Program Director, Emergency Medicine Residency
- Richard O. Davis, DO, RMSK, CAQSM, Ultrasound Director, Geisinger Medical Center
- Kyle Marshall, MD, MBI, FACEP, FAAEM, Associate, Department of Emergency Medicine
- Eric Melnychuk, DO, Department of Emergency Medicine
- Mark F. Olaf, DO, FACEP, Associate Regional Dean of the Central Campus, Geisinger Commonwealth School of Medicine
- Jennifer N. Spinozzi, MD, Emergency Medicine Clerkship Director
- Michael H. Fitzpatrick, MD, FACEP, Chair, Department of Emergency Medicine
- Bradley E. Brocious, DO, Associate Director, Department of Emergency Medicine, Central Region
- Christa A. Gemberling, GME Program Administrator
Faculty
- Sarah W. Alander, MD, FAAP
- Robert R. Cooney, MD, FACEP, MSMedEd
- Steven J. Crellin, DO, FAAP
- Ross D. Ellison, MD, FACEP
- Lisa Hoffman, DO
- Kristy D. Holecko, MD
- Douglas F. Kupas, MD, FACEP, FAEMS
- Erica A. McElroy, DO
- Nicholas W. Murtha, DO
- Jed T. Ritter, MD
- John J. Skiendzielewski, MD, FACEP
- Amy J. Snover, MD, FACEP
- Robert J. Strony, DO, RDMS, RVT
Chief residents
- Gina Baiamonte, MD
Hometown: Ashley, PA
Medical school: Geisinger Commonwealth School of Medicine
- Brilee Madison, DO
Hometown: Davenport, WA
Medical school: Lake Erie College of Osteopathic Medicine

Christopher J. Wilson, MD, FACEP, FAAEM
Program Director, Emergency Medicine Residency
Assistant Professor of Emergency Medicine, Geisinger Commonwealth School of Medicine
Medical school: Jefferson Medical College
Residency: Geisinger Medical Center
Clinical interests: Resident medical education, difficult airway management, clinical aspects of breaking bad news
Interests outside of medicine: Fly fishing, archery, golf, Hawaii

Chadd K. Kraus, DO, DrPH, MPH, CPE, FACEP
System Director, Emergency Medicine Research
ckraus2@geisinger.edu
Chadd K. Kraus, DO, DrPH, CPH, CPE, FACEP, is an emergency physician and system director of Emergency Medicine Research at Geisinger. He is associate professor of emergency medicine at the Geisinger Commonwealth School of Medicine, and associate program director of the Geisinger’s Emergency Medicine Residency where he has been recognized as “Teacher of the Year.” At Geisinger, Dr. Kraus is a clinical advisor to the Steele Institute for Health Innovation, a member of the Institutional Review Board (IRB), the Scientific Review Committee (SRC) and the ProvenCare® Pneumonia and Asthma Steering Committee workgroups aimed at optimizing pulmonary care in acute care settings.
An experienced clinician, educator, scientist and advocate, Dr. Kraus has expertise in health policy and topics at the intersection of emergency care and population health, including infectious diseases, mental health, substance use disorders, clinical ethics, Medicaid reimbursement, and emergency preparedness and response. He is senior editor of the Journal of the American College of Emergency Physicians Open (JACEP) and serves on the board of trustees as chair-elect of the Emergency Medicine Foundation (EMF). Dr. Kraus has been awarded numerous research grants, has lectured extensively in the United States and internationally, and has authored/co-authored over 80 peer-reviewed papers, abstracts and book chapters, many in leading scientific journals including the Journal of the American Medical Association, the Lancet and the New England Journal of Medicine. He is the inaugural director of research for the American Board of Emergency Medicine (ABEM), is an oral examiner for ABEM, and represents ABEM on the specialty-wide Emergency Medicine Data Institute (EMDI) Innovations Advisory Group.
Dr. Kraus is president of the Pennsylvania College of Emergency Physicians (PACEP), Chair of the Tellers, Credentials and Elections Committee of the American College of Emergency Physicians (ACEP) Council, past chair of ACEP State Legislative and Regulatory Committee, and past chair of the ACEP Young Physicians’ Section. He represents the Pennsylvania Medical Society (PAMED) as an alternate delegate in the American Medical Association (AMA) House of Delegates. Dr. Kraus has been honored by the Emergency Medicine Residents’ Association (EMRA) as a “25 Under 45: Influencer in EM.”
A diplomate of the ABEM and a fellow of the American College of Emergency Physicians (FACEP), Dr. Kraus is a Certified Physician Executive (CPE) by the Certifying Commission in Medical Management (CCMM) and is Certified in Public Health (CPH) by the National Board of Public Health Examiners. Dr. Kraus is a graduate of the Philadelphia College of Osteopathic Medicine in Philadelphia, Pa. He completed masters (MPH) and doctoral (DrPH) degrees in public health at the Johns Hopkins Bloomberg School of Public Health in Baltimore, Maryland, where he was awarded the John C. Hume, MD doctoral award. He completed emergency medicine residency training at Lehigh Valley Health in Allentown, Pa., where he was recognized with the Excellence in Research Award.

Jason R. Burkett, DO, FACEP
Assistant Program Director, Emergency Medicine Residency
Assistant Professor of Emergency Medicine, Geisinger Commonwealth School of Medicine
Medical school: Philadelphia College of Osteopathic Medicine
Residency: Geisinger Medical Center
Clinical interests: Resident medical education, dysrhythmia management, oncologic emergencies, palliative care
Interests outside of medicine: Time with wife and kids, my dogs, espresso and other coffee, live music, cycling, traveling

Richard O. Davis, DO, RMSK, CAQSM
Ultrasound Director, Geisinger Medical Center
Ultrasound Fellowship Program Director, Geisinger Medical Center
Core Faculty, Emergency Medicine Residency Program
Assistant Professor of Emergency Medicine, Geisinger Commonwealth School of Medicine
Medical school: Philadelphia College of Osteopathic Medicine
Residency: Geisinger Medical Center
Fellowship: Geisinger Sports Medicine Fellowship
Clinical interests: Resident medical education, ultrasound, sports medicine, orthopedic procedures
Interests outside of medicine: Golf and skiing

Kyle Marshall, MD, MBI, FACEP, FAAEM, FAMIA
Associate, Department of Emergency Medicine
Associate Chief Medical Informatics Officer for Operations
Associate Program Director, Clinical Informatics Fellowship
Clinical Assistant Professor, Geisinger Commonwealth School of Medicine
Medical school: University of Texas Health Science Center at San Antonio
Education: Oregon Health & Science University
Residency: Baylor Scott & White Health
Fellowship: Geisinger
Clinical interests: Informatics, documentation improvement, medical education, OB/GYN emergencies
Interests outside of medicine: Family, cooking

Eric Melnychuk, DO
Department of Emergency Medicine
Medical school: Philadelphia College of Osteopathic Medicine
Residency: Geisinger Medical Center

Mark F. Olaf, DO, FACEP
Associate Regional Dean of Central Campus, Geisinger Commonwealth School of Medicine
Clinical Assistant Professor of Medicine, Geisinger Commonwealth School of Medicine
Core Faculty, Emergency Medicine Residency Program
Medical school: Philadelphia College of Osteopathic Medicine
Residency: Geisinger Medical Center
Clinical interests: Medical education, emergency medical services, toxicology, patient safety
Interests outside of medicine: Fitness, family, fun!

Jennifer N. Spinozzi, MD
Emergency Medicine Clerkship Director
Medical school: St. George’s University
Residency: Geisinger Medical Center
Clinical interests: Resident medical education, medical student education
Interests outside of medicine: Soccer, hiking, running, reading, skiing, anything outdoors

Michael H. Fitzpatrick, MD, FACEP
Chair, Department of Emergency Medicine
Director, Geisinger Medical Center
Core Faculty, Emergency Medicine Residency Program
Medical school: Jefferson Medical College of Thomas Jefferson University
Residency: University of Pittsburgh Medical Center - Internal Medicine; Geisinger - Emergency Medicine

Bradley E. Brocious, DO
Associate Director, Department of Emergency Medicine, Central Region
Core Faculty, Emergency Medicine Residency Program
Physician Advisor, Geisinger Utilization Management
Assistant Professor of Emergency Medicine, Geisinger Commonwealth School of Medicine
Medical school: Philadelphia College of Osteopathic Medicine
Residency: Geisinger Medical Center
Clinical interests: Resident medical education, administration
Interests outside of medicine: Penn State athletics, golf, spending time with my family

Christa A. Gemberling
GME Program Administrator