Doty is accused of robbing a Bank of America branch in Chandler on Sept 4., a BBVA Compass branch in Chandler on Sept. 10., and a Desert Financial Credit Union branch in Mesa on Sept. 11.
Police said evidence from witnesses, video surveillance and "other investigation means" helped identify Doty as the suspect.
According to police and the probable cause statement, in all three robberies, Doty gave the bank teller a notice "demanding money and indicating no counter measures such as bait packs" be used.
In the third robbery at the Desert Financial bank branch, Doty apparently has scratches and cuts on his face and his hand was bleeding, which left blood on the bank counter, according to the police report.
Detectives said the DNA matched Doty.
According to police, Doty spent five years in the Arizona Department of Corrections on charges of forgery, possession of forgery tools, shoplifting, and a number of other charges.