About Sylvia Cartwright M.d. Incorporated. Sylvia Cartwright M.d. Incorporated is a psychiatrist practice located in La Jolla, CA. Related Providers. The doctors and healthcare providers related to Sylvia Cartwright M.d. Incorporated include: Sonya Hintz, MD is a psychiatrist. Sylvia B. Cartwright, MD is a psychiatrist. Roberto Netter, PhD.