River City Hospice Needs Volunteers. Volunteering with River City Hospice cannot only help care for those that are ill, but it can also show mercy in a time where mercy is hard to find. There are many aspects of volunteering through Hospice, from companionship support, caregiver relief, household helper and other ways. For more information, contact John A. Martinez, River City Hospice Volunteer Coordinator, at (361) 945-7442 or by email at [email protected].