WellSpan Medical Education
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Our Faculty

Gretta Gross, D.O., MEd, FACOFP

Medical School:  Philadelphia College of Osteopathic Medicine
Residency: Warren Hospital

Dr. Gross is a York County native and a graduate of Juniata College and Philadelphia College of Osteopathic Medicine. She completed her family medicine residency at Warren Hospital in Phillipsburg, NJ and is board certified in Neuromusculoskeletal Medicine in addition to Osteopathic Family Medicine. She has completed the faculty development fellowship at University of North Carolina and received her Master’s degree in medical education from LECOM. She works full time as VP for Clinical Skills Testing with the National Board of Osteopathic Medical Examiners overseeing the COMLEX Level 2-PE exam and is onsite 1 day per week for clinical work with the residency program. She has worked in residency education for more than 15 years including programs in northeast Pennsylvania and Georgia. She is a member of the AOA, ACOFP, AAO, AAFP, STFM, and PA Osteopathic Family Physicians Society where she serves on the Board of Trustees. She is also a member of the alumni board for PCOM.

Stacey Robert, M.D. Program Director
Chasity Spagnola, D.O. Associate Program Director, Site Director
Emily Maxwell, M.D. Clinical Faculty
Cathy P. Carpenter, M.D. Core Faculty
Gretta Gross, D.O., MEd, FACOFP Core Faculty
Joseph Uwazota, M.D. Core Faculty
Kristina Zimmerman, M.D. Core Faculty
Nancy Nagib, M.D. Core Faculty
Ryan Stolakis, M.D. Core Faculty
Ana Tovar, Ph.D. Core Faculty, Behavioral Science
Andrew T. Delp, M.D. Core Faculty, Maternity Services Coordinator
Andre F. Lijoi, M.D. Part-Time Faculty
Matthew Howie Part-Time Faculty
John Keenan, M.D. Department Chair and Family Medicine Preceptor
Andrew Farabaugh, M.D. Family Medicine Preceptor
Angela Heiland, M.D. Family Medicine Preceptor
Catherine Heilman, M.D. Family Medicine Preceptor
Edward Nelson, M.D. Family Medicine Preceptor
Jennifer McCabe, M.D. Family Medicine Preceptor
John Matthews, M.D. Family Medicine Preceptor
Kevin St. John, M.D. Family Medicine Preceptor
Mark F. Catterall, M.D. Family Medicine Preceptor
Mary McCotter-Desi, M.D. Family Medicine Preceptor
Joanne Myers Administrative Secretary
Allison Weaver Residency Program Coordinator, Sports Medicine Fellowship Coordinator, & Medical Student Coordinator
Victoria Borras Senior Practice Manager
Alexandra Gladfelter Senior Residency Program Coordinator

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