Billing: 800-453-6012 (M-F, 8:30-4p) MyChart Help: 760-837-8595 (M-F, 8a-5p) Labtechniques: 760-674-3640 (M-F, 7a -4p) Eisenhower Imaging: 760-674-3888 (M-F, 8a-5p).