New York City provides the Basic Medical Plan for CSA Welfare Fund and CSA Retiree Welfare Fund members. The New York City Office of Labor Relations – Employee Benefit Plan web site describes eligibility for coverage and the various plans, and their associated costs, that are available.
The costs of the basic plan and optional rider costs, for active members are listed here.
Costs for retirees are listed here.
The Summary Program Description contains descriptions of all available plans and the rules for participation in the City health benefits program.