Directory Ethan Sivewright Associate Director Accounts Receivable 269-387-4224 Send an email Susan Andrie Finance Assistant Senior (269) 387-4489 Send an email Nathan Baxter Collections Coordinator (269) 387-4243 Send an email Christine Piazza Third-Party Billing Coordinator (269) 387-4215 Send an email Mahsa Teachman Customer Service Assistant (269) 387-4244 Send an email