Robin Straka CPA, Ltd. Share: BookkeepingAccountants Robin Straka CPA, Ltd. Visit Website 309 Main Street Onamia, MN 56359 (320) 532-5572 About Map About Specializing in accounting & tax preparation services. We specialize in tax return and tax planning for all clients; bookkeeping & financial statements for small business & corporate tax returns. Directions located on Main Street in Onamia a few blocks west of Highway 169. What's Nearby? Distance: 5 10 15 20 25 50 mi.