SAN FRANCISCO — Perry Odak, the former chief executive officer of Wild Oats Markets, was named an operating partner at Genstar Capital here, a private equity firm focusing on investments in technology, life sciences and health care. Odak served as Wild Oats CEO from 2001 until late last year and is also a former CEO of Ben & Jerry’s. “I look forward to providing my years of experience in the consumer products sector and working with Genstar and their management teams to create healthier, growing businesses,” Odak said in a statement.