Dr. David M. Ackman, Commissioner of Health with Dr. Claudia Pollet who has been named Director of the newly-reorganized and consolidated HIV /AIDS and STD (Sexually Transmitted Disease Control) Division of the Nassau County Department of Health. For information on HIV/AIDS, or for free and confidential testing for HIV/AIDS, please call (516) 571-2019 weekdays between 9:00a.m. - 4:45p.m. For information on STD's, please call (516) 571-2423 weekdays between 9:00a.m.-4:45p.m.