Valencia Gynecology Associates, owned by longtime Santa Clarita Valley OB-GYN physician Don Nishiguchi, MD, has joined the Henry Mayo Newhall Hospital network.  “Dr. Nishiguchi has been a key member of our medical staff for many years, and is much admired by his patients and colleagues,” said Kevin Klockenga, Henry Mayo president and CEO.  “We are ... The post Valencia Gynecology Associates Is Now Henry Mayo Newhall OB-GYN appeared first on KHTS Radio.