About Us At Donald J. LaGrega Attorney At Law in Massapequa, New York and the surrounding areas, we bring our expertise to cases of Wills, Probate Law, and Estate Law, and we are well-known for providing qualitative legal plan and advice in any circumstance. Our skills are unmatched in the industry when it comes to organizing and presenting complicated claims, negotiating with tenacity and providing premium advice, resulting in a very long history of favorable results for our clients.