Try contacting the New York State Mental Hygiene Legal Service, which is effectively a patient advocacy office. I'm not sure if they can help you directly, but they will likely have information to guide you. Good luck!
My response is for general information only. It is not legal advice, and it does not create an attorney-client relationship. There is rarely a black-and-white rule or a "one size fits all" answer to a legal question. Please contact an attorney for specific legal advice regarding your matter so you can customize a solution to your needs and desires. :)
It seems that you were reported in conjunction with section 9.46 of the Mental Hygiene Law. "MHL 9.46 requires mental health professionals to report to their local director of community services ("DCS") or his/her designees when, in their reasonable professional judgment, one of their patients is "likely to engage in conduct that would result in serious harm to self or others.""
There are two issues here. First that it should only effect the 5 years after the report is made, and second it doesn't seem that there is any issue that would cause the report to be created.
The first step is to obtain a certificate of relief from the Office of Mental Health. I would consult an attorney to assist you through this process.