It is the policy of SLWIC to provide essential medical services to all patients regardless of the patient's ability to pay. (928) 236-8001 950 E. Main St, Bldg B ... Patient Portal. Click here to open the Patient Portal. ... San Luis Walk-In Clinic, Inc. Services: Family, Autism Center and Behavioral Health. 214 W. Main St. Somerton, AZ 85350.