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Core faculty

Laurie Cox, MD
Medical school: Medical College of Pennsylvania 
Residency: Williamsport Hospital Family Medicine Residency Program

Benjamin Silverman, MD
Medical school: SUNY Upstate Medical University 
Residency: Internal Medicine/Pediatrics – Christiana Care Health System 
Fellowship: Pulmonary Disease and Critical Care Medicine – Geisinger Medical Center

Julie Xanthopoulos, MD, PhD
Medical school: Yale University School of Medicine 
Residency: Internal Medicine – Yale University School of Medicine

Naveen Yellappa, MD
Medical school: Rajiv Gandhi University of Health and Sciences 
Residency: Internal Medicine – Morristown Memorial Hospital

Kelly Mackenzie, PhD, Behavioral Health Specialist
Graduate School: Clinical Psychology (Concentration: Primary Care/Health Psychology) – Loma Linda University
Residency: Adult Clinical/Health Psychology – Geisinger Medical Center
Fellowship: Primary Care Behavioral Health – Geisinger Medical Center

Nicki D. Vithalani, MD
Medical school: King’s College London 
Residency: Penn State Health Family Medicine Residency at Mount Nittany Medical Center
Fellowship: Hospice and Palliative Medicine – Kaiser Permanente, Los Angeles