Weinstein was a 23rd century Human male. By the late 2270s, he was serving in Starfleet as a medical doctor aboard the USS Enterprise.

Weinstein accompanied Commander Spock, Commander Montgomery Scott, and a security team consisting of Sergeant Jerry Workman, Bobbi Wagner and Sergio Mendoza on a landing party to Abigail, one of the three moons of the planet Cathy in the Novak system. They crossed a prairie and found one-third of the lost treasure of Vulcan. (TOS novella: The Vulcan Treasure)

USS Enterprise (NCC-1701) medical personnel
under Charles Rasmussen & Robert April	S. Poole-April • P. Boyce	under Christopher Pike	P. Boyce • G. Carlotti • Castelano • C. Chapel • M'Benga • Yang
under James T. Kirk (first five-year mission)	R. Abrams • P. Aiello • M. AndrusTaurus • J. Brennan • C. Brent • P. Carmen • C. Chapel • Connors • E. Cortejo Alvarez • Darrell • E. Dehner • A. Dickinson • D. Dyson • Elayne • A. Erickson • A. Ferrara • Harrison • Hinch • Hoffman • C. Ivers • R. Leslie • J. Levine • L. Mayer • M'Benga • L.H. McCoy • Michaels • H. Noel • Z. Odhiambo • Peterson • S. Peterson • Pierson • M. Piper • Prentiss • M. Raymond • R. Rigel • Russell • I. Sanchez • I. Soong • Tail-Kinker to-Ennien • C. Thomas • Wallace • S. West • C. White
subsequent missions under Kirk & Spock	Amekentra • L. Burke • C. Chapel • Duane • Guindon • T. Krejci • Liftig • L.H. McCoy • N. Moktar • Rixil • Spanla • H. Tanzer • Weinstein
see also: administrative personnel • communications personnel • engineering personnel • pilots & flight control personnel • security & tactical personnel • sciences personnel • senior staff • unnamed (2240s and 2250s • 2260s • 2270s and 2280s)