Be sure to ask for your flu shot at your regularly scheduled appointment or call for one of our upcoming flu clinics: Sheridan Office. 2465 Sheridan Drive, 716-835-9800. Monday, 10/11 - 9am-11am. Amherst Office. Hopkins & Klein, 716-688-9641. Friday, 10/8 - 9am-11:30am. Thursday, 10/14 - 1:30-4pm..