Caretaker Supplement Wisconsin’s Caretaker Supplement (CTS) is a cash benefit available to parents who are eligible for Supplemental Security Income (SSI) payments. Caretaker Supplement is not a Medicaid benefit; it pays cash only to eligible parents. To learn more: https://www.dhs.wisconsin.gov/ssi/caretaker.htm How to apply: Online: https://www.dhs.wisconsin.gov/library/F-22571.htm By Phone: 888-445-1621 Application Form: https://www.dhs.wisconsin.gov/library/F-22571.htm Mail a completed application to: Centralized Document processing Unit - CDPU P.O. Box 5234 Janesville, WI 53547-5234 Or fax a completed form to 855-293-1822 In Person Marathon County Portage County Oneida County Langlade County