Meet the Sarpy CASA Staff Sarpy County CASA staff members are professionals that work to ensure CASAs assisting children in foster care are supported and well-trained. Please contact us at (402) 593-2259 to learn more. Tara WilliamsonProgram Director(402) 593-2259Email TaraJenn SimmondsAdvocate Coordinator(402) 593-1595Email JennGeorgia LopezAdvocate Specialist(402) 593-2224Email GeorgiaAlexis SanteeAdministrative Assistant402-593-4409Email Alexis