WellSpan Philhaven is a non-profit behavioral healthcare organization with a wide range of services for children, adolescents, and adults in Central & Southcentral Pennsylvania. ... Every day across central Pennsylvania, the people of WellSpan Health work together to support one patient, one community, one unique health care need at a time.Mt. Gretna‧For Adults‧For Children & Adolescents‧All Locations‧Careers at WellSpan Philhaven‧Coronavirus (COVID-19) Philhaven Service Updates.