Verkkoirvine, calif. , feb. Verkkofirst group of hospitalists affiliated with optumcare unionize. Irvine, ca — nearly 50 physicians employed by the centers for family medicine and healthcare partners medical group, an affiliate of optumcare, won their right to unionize with the union. Verkkooptum employees are coming together to join 1199seiu, the strongest and most effective union of healthcare workers nationwide! United, we will gain a powerful voice to win the highest job standards and improve patient care in our clinic. The forming of a union will give them a stronger collective voice to.