Mayor Michael Bloomberg and City Council Speaker Christine Quinn are also expected to march
The parade, also known as the "St Pat's For All" parade, begins at 43rd Street and Skillman Ave. in Sunnyside and ends at 61st St. in Woodside.
"Our St. Pat's for All 2010 is a generous coming together of businesses, communities and musicians who for a few hours turn the streets of Sunnyside and Woodside into an Ireland of the welcomes," said parade organizer Brendan Fay.
Dromm, he said "is the New York City Council's only openly gay Spanish-speaking Irish American."
New groups in this year's parade include members of the Chilean community who will use the event to raise awareness of their country's recent earthquake and tsunami tragedies. Also in focus will be Irish patriot Roger Casement for his humanitarian work in Africa and South America.
More details on the parade are available at www.stpatsforall.com or by calling (718)721-2780.