Vanguard Medical Group offers the following vaccines and booster shots to patients who meet the criteria established by the CDC. Scroll down for information on booster eligibility. Pfizer - 2 doses, 21 days apart, for those 12+ Jersey City: Monday-Friday, 9 am-4:30 pm and Saturday, 8:30-10:45 am; Randolph: Tuesday, 9 am - 12 pm.