Madison REGIONAL HEALTH SYSTEM UPCOMING FLU SHOT CLINICS By Appointment Only | Please call (605) 256-6551 to schedule. September 29th October 13th October 21st October 30th Madison REGIONAL HEALTH SYSTEM UPCOMING FLU SHOT CLINICS By Appointment Only | Please call ( 605 ) 256-6551 to schedule . September 29th October 13th October 21st October 30th