Patient Portal Education – Lander Medical Clinic Appointments are available in both the Riverton and Lander offices. Call us at (307) 332-2941 or (307)856-6591 Patient Portal Our front desk staff can help register you in office for the Patient Portal. ... Lander Medical Clinic East. 8195 HWY 789 Lander, WY 82520 View Google Map (307) 332-1551 ....