Heath Mackley is a 1994 graduate of LASD. His father Charles Mackley graduated from LHS in 1961, his mother Stephanye Yealy-Smith graduated from LHS in 1969, and his sister Brittany Mackley-Carey graduated from LHS in 2000. All four of his grandparents also graduated from LHS, and his grandfather Wilbur Mackley served on the Littlestown School Board for years before he was born. He has been married to Holly Layton-Mackley since 2002, and they have four children, Charles (17), Lillyanna (16), Elizabeth (15), and Esther (15).
His high school activities included Varsity Football, Varsity Wrestling, National Honor Society, and Class President of the Freshman Class (1990-1991). He attended University of Pennsylvania College of Arts and Sciences (undergrad), University of Pennsylvania School of Medicine (professional), and Pennsylvania State University Smeal College of Business (graduate).
As an undergraduate, he was a disc jockey for WQHS-AM and WXPN-FM , Penn Dining Services. In medical school, he was an Emergency Medical Technician; Senior Class Co-Chair, President William Pepper Medical Society, Nu Sigma Nu member (medical fraternity), and volunteered at University City Health Clinic (local free clinic).
He graduated magna cum laude from University of Penn: B.A. Biological Basis of Behavior, 1998; University of Penn: M.D., 2002; Cleveland Clinic: completed postgraduate residency in Radiation Oncology in 2007; Penn State: M.B.A., 2019 where he was a member of Beta Gamma Sigma business school honor society.
He worked at Penn State Health from 2007-2020 practicing as a Radiation Oncologist in Hershey, PA, treating cancers of all types and patients of all ages. He also taught and conducted research. He started as an Assistant Professor and ultimately attained the rank of Full Professor of Radiation Oncology, Medicine and Pediatrics in 2017. He joined Geisinger Health System 2020- 2023, practicing Radiation Oncologist in Danville, PA, treating cancers of all types and patients of all ages. He still teaches and does some research. This year he was promoted to Chair of the Department of Radiation Oncology.
Heath has been a Co-author in over 50 peer reviewed medical publications, over 40 presentations at regional or national meetings, and book chapters in three textbooks on different cancer topics. He was a co-investigator in competitive grants for cancer research totaling over $1.25 million, served on seven boards of trustees for different medical societies, including serving as President of the Dauphin County Medical Society and Vice Chair of the Pennsylvania Medical Society and was inducted as a fellow of the American College of Radiation Oncology (F.A.C.R.O.).