10, 2014, in San Diego. KGO/ABC News A California man is on trial after he allegedly posed as a doctor and treated desperate cancer and HIV patients, taking their money in the process. Keith Barton, 51, is currently on trial in San Diego for multiple charges including grand theft, treating patients without a medical license your input here and false impersonation of a doctor. According to court moved here documents, for three years Barton allegedly catered to patients with cancer and HIV , taking thousands of dollars from his "patients" for treatments that didn't work. According to court documents, Barton impersonated a licensed doctor from