Mazonni Center provides quality comprehensive health and wellness services in an LGBT-focused environment, while preserving the dignity and improving the quality of life of the individuals it serves. Mazzoni Center is the only health care provider in the Philadelphia region specifically targeting the unique health care needs of the lesbian, gay, bisexual, and transgender communities. Founded in 1979, it is the oldest AIDS service organization in the Commonwealth of Pennsylvania, and the fourth-oldest in the nation.