Flu Vaccines are available to all enrolled beneficiaries. Immunization clinic at NHC Annapolis is open to walk-ins from 12:30 to 15:30, Monday - Thursday. Please remember to sign into the kiosk for the patient receiving the immunizations rather than yourself. Active Duty and all flu shots do not require an order but all other immunizations require a provider’s order. Please have your provider order or bring a copy of the ordered vaccine.