You also can request an activation code online by visiting mychart.urmc.rochester.edu, or by contacting our MyChart Customer Service Center 8 a.m. to 5 p.m. weekdays: 585-275-URMC (8762), 1-888-661-6162. Patients under 18 (and/or their parent/legal guardian) must speak with their doctor in person before signing up for MyChart..