The Medical Form C needs to be filled out by a doctor. If you are unable to schedule an appointment with your regular doctor, you can schedule an appointment with; Dr. Robert Rigg - West Oaks Urgent Care Center 20181 Saticoy Ave, Canoga Park, CA 91306  818-709-5700. He charges a nominal amount and you can do walk-in appointments, bring the C form with you. You should call before to check their hours and confirm the price.