Key Relationships: Co-workers/Health System Employees, Outside Agencies/Other Health Care Providers, General Public/Visitors/Volunteers, Physicians/Medical Office Staff, Students/Interns/Residents/Outside Instructors, Patients, Families, and Significant Others, Vendors/Clients, Third Party Payors/Insurance Companies, Auditors/Review Agencies. Although the job does not require formal or official supervisory responsibility, the incumbent serves as group leader or acts in an informal "assistant supervisory" or "lead" role.