Where can I find lawyer/law firm specializing legal malpractice & worker's compensation section 32 in Nassau County NY?

A Section 32 Waiver Agreement is a negotiated settlement taken in the form of a lump sum payment or annuity that is an alternative to receiving future payments for ongoing care. In a situation such as yours, where you lost your leg and assumedly need little if any further treatment, it may be a good choice- although clearly your lawyer was not a good choice. You need to immediately hire a new lawyer to communicate with your current lawyer, and take over your case. You have the right to switch attorneys any time. Once the actual status of your case is ascertained (it's not clear from what you wrote whether the lawyer is in possession of your settlement money or whether the case is in the middle of settlement negotiations) then the question of legal malpractice can be sorted out. If your case is still viable, it may not be a malpractice case.  While you are free to hire and fire attorneys as you choose (although you may be responsible for compensating more than one attorney if you do so)  an attorney may not simply abandon an active case. Unless the attorney is fired by the client, in most cases an attorney may not stop working on a case without making a motion to be relieved as counsel and getting a court order.