Hasbrouck to be nominated as next head of Cook County Department of Public Health Ryan Voyles 3 years ago Dr. LaMar Hasbrouck will be nominated as the next head of the Cook County Department of Public Health, a spokeswoman confirmed Thursday.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.