If you are a current patient of Therapy Tree Arizona, login to your account here! Get a jump start on the paperwork! Don't worry, it's not that bad. Access The Patient Portal. Fill Out Forms. Pay My Bill. Request an Appointment. GLENDALE CLINIC. 20329 N 59th Ave, Suite A2 Glendale, AZ 85308; MAIN: (480) 613-8313;.