Internal Revenue Service

Helena
Criminal Investigation Divisions
301 South Park, Drawer 10011
Helena, MT 59626
Phone: (406) 441-1039
Fax: (406) 441-1016

Tim Daruk, Special Agent

Ron Herrera, Special Agent

Billings
Criminal Investigation Divisions
2900 4th Avenue North
Billings, MT 59101
Phone: (406) 247-7446
Fax: (406) 247-7485

N. Clyde Rhoades, Group Manager

Loretta Rodiguez, Special Agent

Kenneth Gunn, Special Agent

Michael Mayott, Special Agent

David Steintl, Special Agent

Missoula
Criminal Investigation Divisions
2681 Palmer Street, Suite F
Missoula, MT 59808
Phone: (406) 728-9127
Fax: (406) 721-3291

Martin "Marty" Halko, Special Agent

Janice Harrington, Special Agent

John Nielsen, Special Agent