Trustwave (Chicago)

Trustwave currently works with more than 3 million businesses to protect data and reduce security risks. The company provides a flexible portfolio of services to healthcare organizations designed to protect their specific infrastructure, networks and data while remaining HIPAA and HITECH compliant.

Source :
http://www.beckershospitalreview.com/healthcare-information-technology/107-cybersecurity-companies-in-healthcare-2017.html