BMO Harris Bank - Tatum Ranch Share: Banks BMO Harris Bank - Tatum Ranch Visit Website Request Info 28215 N. Tatum Blvd. Cave Creek, AZ 85331 (480) 419-5560 About Map About Full service banking. Personal checking, savings, credit cards, loans and CD's. Business checking, savings, loans, lines and credit cards. Mortgages, Investments and Private Banking. What's Nearby? Distance: 5 10 15 20 25 50 mi.