A former City Hall aide is mulling a run for one of the City Council’s four at-large seats. “I am considering all of my options but I haven’t made any sort of concrete decision yet,” said Jack Kelly, who served as Mayor Thomas Menino’s neighborhood liaison in Charlestown.

Kelly said there is a need for more people at the state and city level talking about comprehensive substance abuse programs.

Kelly, who currently works at Massachusetts General Hospital as a community relations manager, is a member of the Charlestown Neighborhood Watch and the Charlestown Substance Abuse Coalition. He has also written for Patch.com and, according to his LinkedIn profile, served as an extra in the Ben Affleck movie, “The Town.”

He left his City Hall job in 2011, after serving for five years. He started at MGH in Oct. 2012.

The four City Council incumbents include City Council President Stephen Murphy, and Councillors Ayanna Pressley, Felix Arroyo and John Connolly.

Michelle Wu, South End resident and former Elizabeth Warren campaign aide, said in December she is running for one of the four seats.

Applications for nomination papers at the Elections Department will be available on April 17. Contenders must pick up 1,500 voter signatures in order to make it onto the at-large portion of the ballot.