A. Cornelius Baker is the executive director of the Washington, D.C. Whitman-Walker Clinic, a non-profit lesbian and gay community health organization and is the primary AIDS service organization in the Washington, D.C. metropolitan area.

Baker previously was the executive director of the National Association of People with AIDS (NAPWA) and also served in the White House and participated in key committees of the federal Centers for Disease Control. He has been honored by the National Lesbian and Gay Health Association by being a recipient of the Diego Lopez award for leadership in HIV/AIDS advocacy. Recently, Baker was the first recipient of American Foundation for AIDS Research's Award of Courage for Organization Building.

National authority on HIV and AIDS policy Baker, has been on the frontlines of fighting the AIDS epidemic for as long as there's been a war against the disease. He's lobbied governments, led national groups, served on advisory committees, and today heads one of the nation's most respected Gay community clinics serving people with HIV. He knows the policies, the politics, and the medicine.'

In 2002, Baker has been named a Co-Chair of the first National Coalition for LGBT Health.