Jeffrey Alan Klein M.D., is an American dermatologist from Southern California, who described the tumescent technique for liposuction surgery in 1987, which according to Jayashree Venkataram "revolutionized liposuction surgery" by "permit[ting] liposuction totally by local anaesthesia and with minimal blood loss." He is the author of Tumescent Technique: Tumescent Anesthesia & Microcannular Liposuction, a textbook on liposuction safety and effectiveness.