Born Patricia Duncklee in Long Island, New York, she studied music education at Ithaca College, graduating in 1965.
Met audiences heard her for the next twelve seasons in a variety of leading roles in operas, including Madama Butterfly, Dialogues of the Carmelites, La Bohème, and Aufstieg und Fall der Stadt Mahagonny.
Craig is a specialist in Puccini and Verdi heroines whose other operatic credits include performances with New York City Opera; Teatro la Fenice in Venice, Italy; the Festival of Two Worlds in both Spoleto, Italy, and Charleston, South Carolina; L’Opéra de Marseilles; and the companies of Cincinnati, Miami, Baltimore, and Washington, D.C. Concert performances include Tchaikovsky's The Queen of Spades with the Boston Symphony Orchestra under Seiji Ozawa.
Craig has studied and collaborated with prominent artists including Donald Craig, Marenka Gurevitch, Magda Olivero, James de Blasis, Henry Lewis, Jeffrey Tate, Diane Richardson, Joan Dornemann, Martin Katz, Warren Jones, Anton Coppola, and Julius Rudel.
In addition to her private voice studio in San Francisco and teaching masterclasses she has taught at the American Institute of Musical Studies (AIMS) in Graz, Austria, and the Bay Area Summer Opera Theater Institute (BASOTI), where she collaborated for many years with her late husband, the Wagnerian tenor and voice teacher Richard Cassilly.