Umpire in Chief
Phone: 517-676-3546
National Deputy Umpire in Chief
Phone: 989-876-6130
Phone: 231-798-4760
Phone: 517-394-6625
Phone: 989-274-2501
District 1 UIC
Phone: 269-697-3289
District 2 UIC
Phone: 269-567-4248
District 3 UIC
Phone: 269-968-3700
District 4 UIC
Phone: 734-216-6789
District 5 UIC
Phone: 734-547-2803
District 6 UIC
Phone: 517-902-8937
District 7 UIC
Phone: 616-915-0995
District 8 UIC
Phone: 616-836-8816
District 9 UIC
Phone: 231-893-4217
District 10 UIC
Phone: 517-256-5067
District 11 UIC
Phone: 517-281-0708
District 12 UIC
District 13 UIC
Phone: 810-252-0562
District 14 UIC
Phone: 810-990-5945
District 15 UIC
Phone: 989-992-8998
District 16 UIC
Phone: 989-430-2575
District 17 UIC
Phone: 989-501-0404
District 19 UIC
Phone: 231-383-1111
District 20 UIC
Phone: 989-657-4263
District 21 UIC
Phone: 231-838-0886
District 22 UIC
Phone: 906-635-9482