Chris Brown Allegedly Did Community Service 'Plenty of Times'

Chris Brown performed community service a bunch of times at the Tappahannock Children's Center near Richmond, VA -- this according to the administrator.

Ida Minter told our photog ... Chris was at the Center plenty of times, but when he asked her who was supervising Chris, Ida asked him to leave.

TMZ first reported ... the L.A. County D.A. believes Chris didn't do his community service and the documents may have been phonied to make it look like he did. The D.A. claims Chris' mom was put in charge of supervising him -- as in the fox guarding the hen house.