Rubin Pusha III, has joined McGuireWoods’ health care practice as partner.He represents health care industry clients and investors in transactional matters. Pusha handles mergers and acquisitions, joint ventures and other transactions.• HBR Consulting, a strategy, operations and technology consulting firm focused on the legal industry, has hired Bill Elser and Darryl Hair.Elser will serve as vice president of engineering services at Keno Kozie Services. He has more than 25 years of experience supporting service …