5.0/5.0
A lawyer who receives a minimum threshold of qualifying responses from fellow attorneys can qualify for one of three prestigious Martindale-Hubbell Peer Review Ratings:
AV Preeminent®: The highest peer rating standard. This rating signifies a large number of the lawyer’s peers rank him
or her at the highest level of professional excellence for their legal knowledge, communication skills and ethical standards.
Mr. William L. O'Callaghan, Jr. got this award in 2026
Distinguished: An excellent rating for a lawyer with some experience. This rating indicates the attorney is widely
respected by their peers for high professional achievement and ethical standards.
Notable: This rating indicates that the lawyer has been recognized by a large number of their peers for strong ethical standards.
