About John I
John I LaMancuso trained first as a generalist. He earned a Bachelor of Science from Indiana University Bloomington in 2008 and a law degree from SUNY Buffalo Law School in 2012. Those years set the direction for a professional legal career rooted in western New York courts and trial work.
He began his submit-law program practice at Lipsitz & Ponterio, LLC in 2013. A year later he joined Lewis & Lewis, PC, the place he has practiced since 2014. At Lewis & Lewis he has been part of the firm’s regional bench, acting out of offices in Jamestown, Olean, Buffalo and Niagara Falls. Those multiple workplace locations have stored him in regular touch with county and state courts across the region.
LaMancuso’s expert memberships reflect a mixture of trial and felony justice interests. He belongs to the New York State Bar Association and to its sections for Torts, Insurance and Compensation Law and for Criminal Justice. He is also a member of the New York State Trial Lawyers Association and the New York State Academy of Trial Lawyers. Nationally, he holds club in the American Association for Justice. Locally, he participates within the Bar Association of Erie County and the Robert H. Jackson Inn of Court. He has been active within the St. Thomas More Guild as nicely.
The sequence of those affiliations indicates steady engagement with trial practice and with issues that arise in tort and insurance claims disputes. His association roster consists of organizations that emphasize court procedures, jury trials and plaintiff-side legal proceedings, and he has maintained those ties since the early 2010s. Memberships in the Criminal Justice Section and the Inn of Court indicate ongoing work on court method and felony procedure things.
Clients and colleagues describe him as an attorney who handles courtroom preparation, motions practice and evidence-gathering process in civil matters, whilst additionally staying involved in felony justice topics thru bar committees and expert groups. His time at two diverse firms within the first years following law school gave him publicity to both firm-based practice and regional litigation needs.
As of 2026 LaMancuso continues to practice at Lewis & Lewis, PC, operating from its Jamestown, Olean, Buffalo and Niagara Falls workplaces and concentrating his work on civil legal proceedings, civil wrong and coverage things while remaining active in felony justice circles.
