Dr. Dennis Westin M.D. is a male health care provider in Tucson with Psychiatrist listed as his primary medical specialization. His credentials are: M.D. (Doctor of Medicine).He graduated from University Of Mississippi School Of Medicine in 1968 (around 53 years of experience). Dr. Dennis Westin M.D.'s practice location is: 5240 E Knight Dr (suite 120) Tucson, AZ 85712-2122..