Valley Medical Center Portal Lewiston Id. Health (3 days ago) Valley Medical Center Portal Lewiston Id. (3 days ago) (7 days ago) Valley Medical Center, PLLC is a Urgent Care located in Lewiston, ID at 2315 8th St, Lewiston, ID 83501, USA providing non-emergency, outpatient, primary care on a walk-in basis with no appointment needed. For more ....