Faculty

Preceptors

Alysa Adams, PharmD 
Clinical Pharmacist Emergency Medicine
Dr. Adams is a 2021 graduate of Wilkes University and received her doctorate from the Nesbitt School of Pharmacy. After graduation, she completed a PGY1 pharmacy residency at Geisinger Wyoming Valley Medical Center. She accepted a position at Geisinger Community Medical Center in 2022 as a clinical pharmacist in the Emergency Department. Dr. Adams is a member of the Residency Advisory Committee and is involved in residency research projects and medication use evaluations. Her areas of interest include emergency medicine, toxicology, infectious diseases and pediatrics.

Anthony Alu, PharmD, BCCCP
Coordinator of Pharmacy Service – Critical Care, Emergency Medicine
Clinical Pharmacist – Critical Care Medicine, Emergency Medicine, Trauma
Dr. Alu is a graduate of Wilkes University and received his Doctor of Pharmacy from the Nesbitt School of Pharmacy in 2012. After graduation he accepted a position as a clinical pharmacist at Geisinger Community Medical Center in Scranton, Pa. He serves as the clinical coordinator for critical care and emergency medicine. His areas of interest include vasoactive medications, sedation, infectious diseases and education. He is an active member of the Residency Advisory Committee and the Pharmacy Practice Council and serves as a preceptor for PGY1 critical care and for advanced pharmacy practice experiences (APPE) critical care.

Briannan Budzak, PharmD
Clinical Pharmacist, Internal Medicine, Cardiology, Emergency Medicine, Pain and Palliative Medicine, mentor program and residency wellness
Dr. Budzak is a graduate of Fairleigh Dickinson University School of Pharmacy and Health Sciences. She received her Doctor of Pharmacy in 2021 and completed a PGY-1 residency at Geisinger Community Medical Center in 2022. Dr. Budzak then joined Geisinger Community Medical Center as a clinical pharmacist, where she serves on the residency advisory committee and as a mentor to PGY-1 residents. Her interests include emergency medicine, trauma and internal medicine.

Liam Callejas, PharmD, BCCP
Coordinator of Pharmacy Services- Medicine
Clinical Pharmacist- Cardiology, Internal Medicine
Dr. Callejas is a 2019 graduate of the University of Pittsburgh School of Pharmacy where he earned his Doctor of Pharmacy. He completed a PGY1 residency at UPMC Mercy in Pittsburgh where he also completed the University of Pittsburgh Mastery of Teaching certificate. Following this, he completed a PGY2 in cardiology at The Johns Hopkins Hospital in Baltimore, MD. He accepted a cardiology clinical pharmacist position at Geisinger Medical Center before moving to Geisinger Community Medical Center. Dr. Callejas received his board certification in cardiology in 2022. He is a residency preceptor for the cardiology, advanced cardiology, and internal medicine rotations and serves as a member of the Residency Advisory Committee. His primary areas of interest include antithrombotic therapies and heart failure management.

Stephanie Cybulski, PharmD, BCPS
Clinical Pharmacist, Emergency Medicine, Trauma, mentor program and residency wellness
Dr. Cybulski is a graduate of University of the Sciences in Philadelphia and received her Doctor of Pharmacy from the Philadelphia College of Pharmacy in 2020. After graduation, she completed a PGY-1 pharmacy residency at Geisinger Community Medical Center in Scranton, Pa., where she accepted a position post-residency. She has since earned her board certification in pharmacotherapy (BCPS). Her interests include emergency medicine, critical care and trauma services.

Christopher Defrancesco, BSc, PharmD
Clinical Pharmacist – Drug Information and Health Education, Cardiology
Dr. DeFrancesco received his bachelor's degree in pharmacy in 1994 from the Philadelphia College of Pharmacy and Science and his doctorate in 2011 from Shenandoah University. With a commitment to the philosophy of lifelong self-directed learning, Dr. Defrancesco acquired certificates from nationally recognized organizations such as his American Pharmacists Association Pharmacy-Based Immunization Delivery Certificate and Pain Management Certificate. He maintains a practice at Geisinger Community Medical Center in Scranton, Pa. His primary areas of interest include pain management, internal medicine and cardiology, as well as serving as preceptor for PGY1 pharmacy residents. Dr. Defrancesco is also adjunct faculty at Wilkes University Nesbitt School of Pharmacy and Passan Nursing.

Mariah Deibert, PharmD
Pharmacy Manager
Clinical Pharmacist – Emergency Medicine, Cardiology
Dr. Deibert is a graduate of Duquesne University in Pittsburgh, Pa. She received her Doctor of Pharmacy in 2016. After graduation she accepted a position as a clinical pharmacy as Geisinger Community Medical Center in Scranton, Pa. Her areas of interest include emergency medicine, cardiology, trauma and teaching. She is a member of Geisinger Community Medical Center’s Residency Advisory Committee as well as its Pharmacy Practice Council.

Shannon Exeter, PharmD
Clinical Pharmacist – Emergency Medicine, Trauma Services
Dr. Exeter graduated from Temple University School of Pharmacy in 2008. She was a clinical pharmacist at Moses Taylor hospital for 7 years with experience in critical care, NICU and general medicine. She then joined as a clinical pharmacist at Geisinger Community Medical Center, where she’s been for the past five years with a focus in critical care, trauma, infectious diseases and emergency medicine. Dr. Exeter is the residency preceptor for the trauma rotation at Geisinger Community Medical Center.

Michael J. Fox, PharmD
Director, PGY1 Pharmacy Residency Program
Clinical Pharmacist – Infectious Diseases, Critical Care, Pediatrics, OB/GYN
Dr. Michael Fox earned his Doctor of Pharmacy degree from the Nesbitt School of Pharmacy at Wilkes University in 2003. He began his career at Penn State Milton S. Hershey Medical Center, where he specialized in critical care, pediatrics, and neonatal medicine.

In 2005, Dr. Fox joined Community Medical Center Health System as Clinical Coordinator, overseeing clinical pharmacy services and mentoring pharmacy students from multiple institutions. He also served as an adjunct associate professor in the Department of Pharmacy Practice at Wilkes University.

Following the Geisinger merger in 2012, Dr. Fox transitioned to Geisinger Community Medical Center, where he continues to practice as a clinical pharmacist. He holds certifications in obstetric critical care through the Society of Critical Care Medicine’s Fundamental Critical Care Support program and in pediatric pharmacy through the American Society of Health-System Pharmacists.

Dr. Fox precepts residents in antimicrobial stewardship, infectious diseases, and pain and palliative care. He actively contributes to several hospital committees and serves as co-chair of the antimicrobial stewardship program at GCMC.

His professional interests include pediatrics, neonatology, obstetrics, infectious diseases, pain management, and critical care.

Frederick Leri, PharmD, MBA, BCPS
Director, Geisinger Community Medical Center
Dr. Leri received his bachelor’s degree from Philadelphia College of Pharmacy and Science in 1985, his Doctor of Pharmacy from the University of Illinois at Chicago in 1994 and his MBA from The University of Scranton in 1997. He is the director of pharmacy at Geisinger Community Medical Center in Scranton, Pa., and a faculty member at Wilkes University School of Pharmacy, University of the Sciences and Geisinger Commonwealth School of Medicine. Dr. Leri spent 30 years at Moses Taylor Hospital, where he held numerous pharmacy positions including residency program director. His professional interests include infectious diseases, critical care and education. Dr. Leri is the preceptor for the internal medicine rotation.

Erika Monacelli, PharmD
Clinical Pharmacist, Infectious Disease
Dr. Monacelli is a graduate of Temple University School of pharmacy. She received her Doctor of Pharmacy in 2014. After graduation, she completed a PGY1 pharmacy residency at Moses Taylor Hospital in Scranton, Pa., and the Wilkes University Nesbitt School of Pharmacy Resident Teaching Certificate in 2015. After completing her residency, she joined Geisinger Community Medical Center as a clinical pharmacist in 2015. She is a member of the Antimicrobial Stewardship and Residency Advisory committees and serves as a residency preceptor for the antimicrobial stewardship and infectious diseases rotations.

Lindsey Schneider, PharmD, BCCCP
Clinical Pharmacist – Emergency medicine, Infectious Diseases and Critical Care
Dr. Schneider graduated from Nesbitt School of Pharmacy at Wilkes University in 2009, then completed a PGY1 residency at York Hospital, WellSpan Health System, in York, Pa. After residency, she accepted a position with Geisinger and is now an acute care clinical pharmacist at Geisinger Community Medical Center. She is board certified in pharmacotherapy and in critical care. Dr. Schneider is a preceptor for the critical care, emergency medicine and infectious diseases rotations.

Miranda Steigler, PharmD
Clinical Pharmacist – Internal Medicine AMS, Infectious Diseases
Dr. Steigler earned her Doctor of Pharmacy degree from Albany College of Pharmacy and Health Sciences in 2024. She went on to complete a PGY-1 residency at Geisinger Community Medical Center, where she later accepted a position as a clinical pharmacist. In her current role, she contributes to the residency advisory committee and provides mentorship to PGY-1 residents. Miranda’s professional interests focus on infectious diseases and critical care.