Dr. Rainey received two Bachelor of Science degrees from Texas A&M University; one in 1976 in Biomedical Science and one in Veterinary Science in 1979. He received his DVM in 1980 from TAMU. At graduation, he joined a multi-veterinarian practice in Denton and in 1983 he purchased his own practice. He moved his practice to its present location in 1999. He is a 13 year member of VIN (Veterinary Information Network) and a former VIN on-line moderator.
Dr. Rainey is a member of the Patriot Guard Riders and the American Legion. He is a former Marine and Navy Corpsman. He currently lives in Denton with his favorite companion, his German Shepherd, Czech.