Us Magistrate 400 S Phillips Ave Sioux Falls, SD 57104 Phone : (605) 330-4389 Business Category Federal Courts County Government-Courts Courts Honorable John E Simko 400 S Phillips Ave Sioux Falls, SD 57104 Phone : (605) 330-4389 Business Category Government Offices-Federal Legislative Bodies United States Government--courts, District Court, Magistrate Judge Marshall Mark F 400 S Phillips Ave Sioux Falls, SD 57104 Phone : (605) 330-4389 Business Category Government Offices-Federal Government Offices & Public Schools