The Michigan appeals court affirmed a two-year suspension for a doctor who approved nearly 22,000 medical marijuana certificates in a 12-month period.  An expert said it would have been impossible for Dr. Vernon Proctor to conduct exams, obtain medical histories and take other necessary steps for that many patients. He has an office in Baldwin, 75 miles north of Grand Rapids. People seeking to use medical marijuana need approval from a doctor when they apply for a state card.