Dr. O'Reilly graduated from the University of Tulsa in 1992 (B.S. Biology and a minor degree in chemistry).  He then attended Logan College of Chiropractic in St. Louis, MO where he attained his Doctor of Chiropractic degree and post-doctorate certification in acupuncture.

After graduating from Logan Collgege of Chiropractic in 1996, he returned to Tulsa and worked for a large group practice gaining valuable clinical experience.  In 1998, he relocated to Muskogee where he met and married his wife while establishing a satellite clinic for his former practice group.  In January of 2001, Dr. O'Reilly entered private practice as a solo practitioner and founded O'Reilly Chiropractic at the present location in the University Heights Center located on the southeast corner of U.S. Highway 69 and West Shawnee in Muskogee.

Dr. O'Reilly is a F.I.T. Certified Injury Prevention Specialist.  He has extentsive training in workplace ergonomics and musculoskeletal injury prevention.  He is the founder of OK Safety Solutions which provides ergonomic training materials for safety minded businesses and conducts injury prevention classes for their employees.  He has worked with local and national companies such as Hillcrest Hospitals, Georgia Pacific and Brinks Armored Security.

Dr. O'Reilly is a member of the Unified Chiropractic Association of Oklahoma and the American Chiropractic Association.