Cook County committee approves appointment of Israel Rocha Jr. as Cook County Health CEO Ryan Voyles 4 years ago A Cook County Board of Commissioners' committee has signed off on the appointment of Israel Rocha Jr. as the next CEO of Cook County Health.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.