They will assist you if you believe you are experiencing discrimination from the FAA or a workplace.
"The National Center for Transgender Equality is the nation’s leading social justice advocacy organization winning life-saving change for transgender people."
The Transgender Law Center assisted in getting the discriminatory regulations surrounding transgender pilots changed to less stringent requirements. They will help you if you have been blatantly discriminated against by the FAA or an employer. They will not assist in getting your medical processed unless there is a strong case for discrimination.