Meet the Preceptors
Karen Frock, Pharm.D., BCPS, BCCCP received her Pharm.D. from the University of Maryland School of Pharmacy in 2000. She completed a PGY1 and a PGY2 residency in Critical Care at WellSpan York Hospital. After completion of residency training, she began clinical practice in the trauma and surgical ICUs at WellSpan York Hospital. Her practice involves providing pharmacotherapy for patients with traumatic injury as well as surgical critical care patients. In addition to being a clinical coordinator and Residency Program Director for the PGY2 program, Karen serves as preceptor for the Trauma Surgical ICU rotation for PGY1 and PGY2 residents. She also precepts the PGY2 longitudinal drug information, teaching, and practice administration and staffing experiences. Karen is involved with various hospital committees including WellSpan Pharmacy and Therapeutics, Drug Shortage, Trauma Performance Improvement, Trauma Guidelines, Enhanced Recovery after Surgery (ERAS), Critical Care Operations Committee, and Blood Utilization Review. She was the recipient of the 2009 Pennsylvania Society of Health-System Pharmacists Joe E. Smith Award.
Alison Sabados, Pharm.D., BCCCP received her Pharm.D. from Wilkes University in 2011. Ali completed her PGY1 and PGY2 Critical Care residencies at York Hospital. Following residency training, Ali began clinical practice with cardiothoracic surgery in 2013 and currently rounds with the interdisciplinary teams in the cardiac and open-heart ICUs. She is also involved with several committees including the WellSpan Critical Care Steering Committee, Heart Failure, Extracorporeal Membrane Oxygenation (ECMO), and Ventricular Assist Device (VAD) Steering Committees. Ali serves as Clinical Coordinator and Residency Program Director for the PGY1 program. She precepts the consult orientation, cardiology, and cardiovascular ICU rotations for PGY1 and PGY2 residents.
Molly Walbrown, Pharm.D., BCPS, CACP, CDE is a graduate from West Virginia University School of Pharmacy in 2004. She completed her pharmacy practice residency with an emphasis in ambulatory care at the VA Pittsburgh Healthcare System at the University of Pittsburgh in 2005. She joined the WellSpan York Hospital Pharmacy Team in 2005 and currently serves as a preceptor for PGY1 residents during their ambulatory care rotation. Molly’s unique role expands beyond WellSpan York Hospital into the outpatient area where she provides clinical pharmacy services to diverse and underserved patients in the community. As a Certified Diabetes Educator, she served as Chair of the system wide WellSpan Diabetes Clinical Effectiveness Team from 2007-2017. Awards she has won include WellSpan Health Outstanding Educator in 2006, WellSpan Pharmacy Preceptor of the Year in 2015, and WellSpan Patient Safety Award in 2017.
Brittany Thomas, Pharm.D., BCPS, BCIDP received her Pharm.D. from Notre Dame of Maryland University School of Pharmacy in 2016. She completed a PGY1 Pharmacy Practice Residency at WellSpan York Hospital. After completion of residency training, she began practice as a clinical pharmacist at WellSpan York Hospital and joined the antimicrobial stewardship team in 2018. Her practice involves optimizing antimicrobial regimens for patients throughout the hospital and assisting in various stewardship initiatives. She serves as a preceptor for the Infectious Disease core and elective rotations. Brittany is involved with various hospital committees including WellSpan Formulary Committee and the System-Wide Antimicrobial Stewardship committee.
Chelsea Laughner, Pharm.D., BCPS received her Pharm.D. from Lake Erie College of Osteopathic Medicine School of Pharmacy in 2016. She completed a PGY1 Pharmacy Practice Residency at WellSpan York Hospital. After completion of residency training, she began practice as a clinical pharmacist at WellSpan York Hospital and transitioned into a critical care role in 2021. Chelsea serves as a preceptor for the medical ICU rotation for PGY1 and PGY2 residents and coordinates the emergency/code Simulation Lab experience. She is involved in various committees including WellSpan Formulary Committee, Order Set Review, and Epic Workflow Optimization.
Christine Higgins, R.Ph., BCPS graduated from University of Pittsburgh in 1994. She started her career in the community setting before transitioning to hospital pharmacy in 2001. Christine has been with WellSpan York Hospital since 2005, working in various clinical roles including the pain management team and rounding with Family Medicine. She precepts PGY1 residents for their required Family Medicine rotation.
Alyssa Robertson, Pharm.D., BCPS, BCCCP, BCEMP received her degree from Philadelphia College of Pharmacy, University of the Sciences in 2012. She completed a PGY1 Pharmacy residency at CJW Medical Center in Richmond, VA and a PGY2 Critical Care residency at the Hospital of the University of Pennsylvania in Philadelphia, PA. Starting her pharmacy career as an intern at WellSpan York Hospital in 2006, she briefly acted as a Pharmacy Coordinator before transitioning to her current role in Emergency Medicine. Her clinical practice includes sepsis management, participation in codes and trauma resuscitation, stroke management, toxicology, and many other areas. Alyssa serves as preceptor for the PGY1 and PGY2 required and elective ED experiences.
Matthew Walbrown, Pharm.D. graduated from West Virginia University (WVU) School of Pharmacy in 2004. He completed his PGY1 Pharmacy residency at WVU Hospital in 2005 and his PGY2 Critical Care residency at WellSpan York Hospital in 2006. He worked at The Johns Hopkins Hospital for 15 years in critical care and administrative roles before returning to York Hospital in 2021. Matt works in our Emergency Department and precepts PGY1 and PGY2 residents for their required and elective ED rotations.
Dalton Fishel, Pharm.D., BCCCP received his Pharm.D. from Lake Erie College of Osteopathic Medicine School of Pharmacy in 2017. Dalton completed his PGY1 Pharmacy Practice Residency and PGY2 Critical Care Pharmacy Residency at WellSpan York Hospital. After completion of his residency training, Dalton served as a clinical pharmacist before helping extend Emergency Medicine pharmacy services to third shift. Currently, Dalton works as a clinical pharmacist and serves on the WellSpan System Formulary Committee.
Benson Mathew, Pharm.D., BCPS received his B.S. from University of Buffalo in 1997 and his Pharm.D. from Shenandoah University in 2011. Benson has been a clinical pharmacist at WellSpan York Hospital since 2006 and currently leads our pharmacy pain management team. He was awarded the Gita Wasan Patel Pharmacy Excellence Award from HealthTrust in 2018 along with other members of the York Hospital pain team for innovative and high-level patient care they provide. Benson shares his expertise with residents who choose to complete an elective Pain Management rotation.
Geoffrey Arentz, Pharm.D., BCPS received his Pharm.D. from Wilkes University in 2016. He completed his PGY1 residency at WellSpan York Hospital in 2017. After completion of his residency, he began working as a clinical pharmacist before transitioning into his current role as Clinical Coordinator. Geoffrey rounds with Internal Medicine and precepts residents and students. Geoffrey serves on the Formulary Committee and the Antimicrobial Stewardship Pharmacy Subcommittee.
Joseph DiBlasi, Pharm.D., MBA, BCPS received his Pharm.D./MBA from the University of Maryland in 2014. He completed a PGY1 Pharmacy Residency at West Virginia University. After completion of residency training, he began practice as a clinical pharmacist at WellSpan York Hospital and transitioned into a critical care role in 2019. Joseph serves as a preceptor for the Neuroscience Intensive Care Unit (NSICU) rotation for PGY1 (elective) and PGY2 (required) residents. He was voted preceptor of the year by the 2022-2023 residency class for his dedication and passion for teaching residents. He is involved in various committees including WellSpan Formulary Committee, Order Set Review, and Patient Experience Council.
Matthew Crouse, Pharm.D., BCPS graduated from Wilkes University in 2009. He completed a PGY1 residency at Carilion Roanoke Memorial Hospital in Roanoke, VA before moving back to PA and accepting a clinical pharmacist position at York Hospital. He has worked in both the distributive and clinical sides of the pharmacy, but his practice has transitioned mainly to the oncology service line where he participates in interdisciplinary rounds for the hospitalist medical service as well as working with the oncology team to ensure safe and effective chemotherapy regimens. Matt serves as preceptor for the oncology rotation, which is an elective for PGY1 residents. Matt also participates on multiple committees/subgroups including the Beacon Optimization Team and Treatment/Therapy Plan Review.
Theresa Langeheine, Pharm.D., BCPS received her PharmD from the University of Maryland School of Pharmacy, her Bachelor of Science in Pharmacy degree from the University of the Sciences in Philadelphia and her Bachelor of Science in Chemistry from Saint Joseph's University in Philadelphia. With WellSpan York Hospital since 1991, her practice has evolved over the years with a transition to Behavioral Health Specialist Pharmacist in 2022. The Behavioral Health Pharmacist Specialty position was new to the System and involved Theresa developing a program path and opportunities to provide care to patients admitted to Behavioral Health. Theresa serves as a preceptor for the Behavioral Health rotation, which is an elective for PGY1 and PGY2 residents. She is involved in various committees including WellSpan Formulary Committee, Order Sets Review, Epic Workflow Optimization and several perioperative committees.
Duy Nguyen, Pharm.D., BCPS graduated from Temple University School of Pharmacy in Philadelphia, PA. He completed his PGY1 Pharmacy residency at Virtua Health and afterward worked as a clinical pharmacist at Lankenau Medical Center with a focus on internal medicine, where he later developed and lead a PGY1 Pharmacy residency program. With the arrival of his daughter, Duy moved to York, PA and joined the WellSpan York hospital pharmacy department covering distributive functions, internal medicine and NSICU. In his spare time, he enjoys spending time with family and catching up on video games.
Karli Unick, Pharm.D., BCPS received her Pharm.D. from Shenandoah University in 2015. She completed a PGY1 Pharmacy residency at WellSpan York Hospital. After completion of residency training, she transitioned into a clinical pharmacist position where she was able to develop and extend pharmacy services into the Neonatal Intensive Care Unit (NICU). Her practice involves providing pharmacotherapy for patients admitted to the NICU. Karli serves as a preceptor for the NICU rotation, which is an elective for PGY1 and PGY2 residents. Karli also participates on interdisciplinary committees including NICU Practice and Quality and Neonatal Care.
Ryan Sentz, Pharm.D., BCPS, received his Pharm.D. from the University of Pittsburgh in 2005. With WellSpan York Hospital since 2000, he started as a student intern, transitioned to a clinical pharmacist, and to a clinical coordinator, and most recently to Operations Manager for the pharmacy department. He oversees all distributive operations for the department. Ryan works with residents during their administrative rotation and on various projects.
Rupal Amin-Anderson, Pharm.D. completed her pharmacy training at University of Maryland in 2003. She worked at Select Specialty Hospital before joining WellSpan in 2021. Rupal serves as Pharmacy Operations Coordinator and oversees distributive workflow daily. She precepts PGY1 residents during their Distributive Orientation and assists with their administrative experience and related projects.
Christine "Chris" Reed joined WellSpan Health in 1997 as a pharmacy technician. In 2000, Chris successfully completed her technician certification. Chris transitioned into her current role as Administrative Assistant for the WellSpan York Hospital Department of Pharmacy in 2003. Chris serves as the primary resource for all residency applicants. She organizes applications and answers questions about the application process.
