St. Mary Mercy Livonia 36475 Five Mile Rd. Livonia, MI 48154 Vaccine Clinic located inside South Lobby in Classrooms 1 and 2. Offering Pfizer COVID-19 vaccines only. COVID-19 vaccines are available for everyone 12 and older. Minors must be accompanied by a parent. Walk-in dates/times listed below: Every Tuesday from 1:00 p.m. - 5:00 p.m..