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Treesa Williamson, MSN, AGPCNP-C, PMHNP-BC, is an experienced Nurse Practitioner currently working at Valley Forge Medical Center and Hospital since July 2022. Previously, Treesa served as a Nurse Practitioner at Ophelia Health focusing on Opioid-Based Addiction Treatment from November 2020 to May 2022, and at Keystone Center providing medical, psychiatric, and addiction medicine services from December 2019 to April 2020. Prior roles include working with substance abuse and mental health populations in a Partial Hospitalization Program at Behavioral Wellness & Recovery and various CRNP positions at Creative Health Services Inc and Recovery Centers of America. Treesa's career began at Penn Medicine, University of Pennsylvania Health System as a Registered Nurse from January 2005 to April 2016. Treesa holds a PMHNP degree from Wilkes University and an MSN degree from Walden University.