Dr. Foster Lasley completed his undergraduate degree at Oral Roberts University, Tulsa, Oklahoma receiving a Bachelor of Science in Chemistry and Mathematics in 2005. His academic honors include graduating Summa Cum Laude and Gamma Beta Phi Honors Society Vice President. Dr. Lasley received his medical degree at The University of Oklahoma in 2009 and finished his internship in Internal Medicine there in 2010. He completed his Residency in Radiation Oncology at Indiana University in 2014 and is board-certified by ABR in Radiation Oncology.

After graduation, Dr. Lasley worked with Mercy Hospital in Oklahoma and Genesis Cancer Center. Dr. Lasley joined Highlands in 2023.

Dr. Lasley is happily married to his wife, Claire. They have a young son and daughter, along with two dogs and too many cats. He has co-authored a book on physics and enjoys cooking, building things, and hiking.