(written from a Production point of view)
Peter R. Osinoff is a lawyer and occasional actor who appeared as a 25th century Starfleet officer in the final Star Trek: Voyager episode "Endgame". As a background actor, Osinoff received no credit for his appearance and was identified by the name tag of his costume which was sold off on the It's A Wrap! sale and auction on eBay and previously worn by Tim Kelleher in the Star Trek: The Next Generation final episode "All Good Things...".  
Osinoff graduated magna cum laude from the Yale University in 1973 and from the Stanford Law School in 1976, while he received a M.A. in Philosophy from the Stanford University. After an occupation in the U.S. District Court for Colorado he joined the US Attorney's office in Los Angeles. Osinoff is the president of the Wilshire Bar Association and a member of the California Academy of Attorneys for Health Care Professionals and the Association of Southern California Defense Counsel. In 1983 he joined the adminstrative law firm Bonne, Bridges, Mueller, O'Keefe & Nichols and has become shareholder in 1986.