How do i contact lutheran child and family services of illinois? Lutheran Child and Family Services of Illinois. One Oakbrook Terrace, Suite 501. Oakbrook Terrace, IL 60181. Phone : 708-771-7180. Fax : 708-771-7184.What is lssis phone number? If you have a question about LSSI’s services or want to inquire about making a contribution, call 847.635.4600. Our hearing-impaired TTY number is 847.390.1460. Our main fax number is 847.635.6764. Our Administrative Office business hours are 8:30 a.m. to 4:30 p.m., Monday through Friday.Where are thelcfs offices located? LCFS offices are located throughout Illinois. Click a tab to find locations by region. Adoption (Domestic and International) and Birth Parent Services Foster Care; Intact Family Recovery; Extended Family Support