By Terry Kanakri, Courtesy of Kaiser Permanente For Santa Clarita residents Herminia Amezcua and Ivy Semenez, two physicians who are also sisters practicing medicine at Kaiser Permanente in the Antelope Valley, embracing their Hispanic heritage has always been a key success factor in their careers and lives. As America began recognizing National Hispanic Heritage Month on Sept. 15, Amezcua and Semenez say knowing and embracing their Hispanic r…