Corridor Business Journal: Cedar Rapids-based Eastern Iowa Health Center (EIHC), a comprehensive  primary and oral health care service provider, recently announced the appointment of Elly Steffen as chief operations officer and Erin Byers Langdon as chief development officer. Steffen most recently was senior project manager at UnityPoint Health – St. Luke’s Hospital and previously served as the CEO of UnityPoint Health Continuing Care Hospital at St. Luke’s. Langdon previously owned and operated Grants for Good, LLC, a full-service grant writing firm.