Business Directory Go back to directory. Deason CPA, P.C. Deason CPA, P.C. Contact: Toni Deason, CPA Work 509 Main St PO Box 1135 Miles City MT 59301 work Work Phone: (406) 234-5410work Website: Deason CPA Biography Toni Deason was born and raised in Miles City. She graduated from CCDHS, and received her Associates of Applied Science in Small Business Management, and a Certificate in Accounting from Miles Community College. In 2015 she graduated from University of Mary with her Bachelor of Science majoring in Accounting. Toni became a Certified Public Accountant in 2017. Bookkeeping Payroll Tax Preparation
