NEW YORK — WNYC has named Mitchell Heskel vice president for finance and administration effective March 16. Heskel will be responsible for the public radio station’s financial planning and policies as well as oversight of the administrative departments.Heskel joins WNYC as it begins its second year of self-ownership. The City of New York, which had owned the station since 1924, turned the licenses over to the station in January 1997 at a cost of $20 million to be paid over six years. Heskel moves to WNYC from the Metropolitan Opera Assn. He previously worked as an auditor at Price Waterhouse and as chief financial officer for the National Dance Institute.