Dr. Killian practiced General Medicine and Forensic Psychiatry in the state of Iowa. Since moving to Oklahoma, he has been a drug and alcohol counselor as well as a clinical director and a consultant for different co-occurring agencies. He has served on several state boards and was appointed by the Governor to serve as a member of the Oklahoma Board of Licensed Alcohol and Drug Counselors. Dr. Killian is a board approved supervisor for applicants who are training for licensure or certification. He is also an examiner for the Oklahoma Oral Boards.