Dewey

Regional Non-Capital Trial Office: Woodward

Counties Covered: Woodward, Woods, Major, and Dewey

Satellite Office Contact
Non-Capital Trial: Woodward
1111 Hillcrest Dr
Woodward, OK 73801
Tel: 580-331-6305

Main Office Contact
Non-Capital Trial
111 N Peters Ave, Suite 500
Norman, OK 73069
Tel: 405-801-2655
Fax: 405-801-2661

Division Chief
Troy Cowin
Tel: 405-801-2654
Email: Troy.Cowin@oids.ok.gov

Employee Name	Title	Email
Silas Lyman	Interim Deputy Division Chief	Silas.Lyman@oids.ok.gov
Dylan Riddle	Defense Counsel	Dylan.Riddle@oids.ok.gov
Tom Koen	Investigator	Tom.Koen@oids.ok.gov
Cathy Coulson	Legal Secretary	Catherine.Coulson@oids.ok.gov

Last Modified on Jun 19, 2026