May 24, 2019
October 15, 2018 through December 21, 2018
OS, Inc. on behalf of:
Sauk Prairie Healthcare, Fort HealthCare, Inc., and Columbus Community Hospital.
Name, Social Security number (in the form of insurance identification numbers), hospital account number, name of insurer, summary of charges, and category of service.
Unknown number of affected individuals including an unknown number of Wisconsin residents.
OS, Inc. an organization which provides claims management services to certain healthcare providers (among which is Sauk Prairie Healthcare, Fort HealthCare, Inc., and Columbus Community Hospital), announced that a phishing email campaign may have resulted in unauthorized access to personal information contained within an OS employee’s email account. On April 8, 2019, OS, Inc. notified affected hospitals that their patient's personal identifying information may have been subject to this incident.
On May 24, 2019, OS, Inc. began mailing individual notifications to each patient impacted. OS, Inc. is offering free access to Kroll’s fraud consultation and identity theft restoration services. Kroll can be contracted at (866) 775-4209, Monday through Friday from 8:00 a.m. to 5:30 p.m. with any questions.
OS, Inc. can be contacted by mail at:
PO Box 311
Pewaukee, WI 53072
Columbus Community Hospital patients may contact Andrea Link, Privacy Officer at CCH by calling (920) 623-2200 with any questions related to this incident.
Fort Healthcare patients may call (920) 568-6583 or (877) 324-2175 Monday through Friday from 8:00 a.m. to 5:00 p.m. Central Time.
Sauk Prairie Healthcare patients may call (608) 643-3311.
If you feel you are a victim of identity theft as a result of this breach, contact the Bureau of Consumer Protection at (800) 422-7128 or email us at