Olympic Committee and Twistars Gymnastics, a Michigan-area club where Nassar treated injured gymnasts on a weekly basis.
The lawsuit describes how Nassar was allowed unfettered access to Raisman and other elite athletes as they trained at the Karolyi Ranch owned by famed coaches Bela and Martha Karolyi and at competitions around the world.
Raisman's move comes days after the U.S. Olympic Committee, fresh off the Winter Games in South Korea, announced chief executive Scott Blackmun was stepping down because of a prostate cancer diagnosis.
Aly Raisman delivered a victim impact statement against Larry Nassar in a MI courtroom this past January. Her attorney John Manley accused the USOC and USA Gymnastics of "a conspiracy to silence victims and cover-up the largest child sex abuse scandal in history".
Nassar is now in a federal prison in Arizona, serving a 60-year sentence on child pornography charges.
In addition to Moore, more than 300 women and girls have said they were sexually abused by Nassar under the guise of medical treatment. She battled shame, guilt and depression in the aftermath, Raisman said.
Moore, who is now a gymnist at the University of MI, claims in his suit that he was sexually abused and harassed by Nassar in 2016.
ABC News reached out to the USOC and USA Gymnastics for comment, but have not yet heard back. She was among almost 200 gymnasts who gripped the country with their testimony about decades of abuse during his televised sentencing hearings.
In a statement reported by NBC, Raisman said, "I refuse to wait any longer for these organizations to do the right thing". That was after the disgraced former physician had parted ways with USA Gymnastics following a almost 30-year association, but before he was sacked by Michigan State University, where he spent two decades. In the lawsuit, she claims both organizations could have done more to stop the former doctor's abuse. But Raisman does not believe either committee has taken this situation seriously enough. "It is my hope that the legal process will hold them accountable and enable the change that is so desperately needed", the statement continued.
"It has become painfully clear that these organizations have no intention of properly addressing this problem".
"After all this time, they remain unwilling to conduct a full investigation, and without a solid understanding of how this happened, it is delusional to think sufficient changes can be implemented", Raisman said in the statement to NBC News.