Chandler Pain Management Doctor David Ray Dr. David Ray is a double board certified and fellowship trained Interventional pain medicine physician. Dr. Ray believes all patients deserve to tell their story, to be educated on the source of their pain, and given viable options to live as pain free as possible. Dr. Ray studied medicine at The Autonoma University in Guadalajara, Mexico. There he had the opportunity to work in state of the art hospitals and numerous small red cross clinics throughout rural Mexico. During this time he became proficient in conversational and medical Spanish, and developed a love for the Mexican culture, food and music. Dr.