Dr. Davis graduated from Penn State University in 1984 with a BS degree in Electrical Engineering. He attended Southeastern College of Osteopathic Medicine graduating in 1989. Following completion of his internship, Dr. Davis did a combine residency in internal medicine and pediatric at Geisinger Medical Center from 1990-94. During that time, he was assistant chief resident in 1993 and chief resident in 1994.

Dr. Davis became Board Certified by the American College of Internists and The American Academy of Pediatrics in 1994. He was part of the teaching faculty for the family medicine department of York Hospital and was given the Teacher of the Year award by the family medicine department in 1997. Dr. Davis has specialized exclusively in the treatment of those who suffer from addictive diseases since 2002 and became a Certified Addiction Counselor Diplomat in 2007 through the Pennsylvania Certification Board. He is also board certified as an Addictionologist by The American Society of Addiction and The American Board of Addiction Medicine.  Dr. Davis does medication assisted treatment for addiction and the dually diagnosed client.