Contact Us

Customer Service Email: Non-Member Email: Toll Free: 1-866-509-5398 (TTY: 711)* Local: 314-209-2700 (TTY: 711) Fax: 1-888-480-2577 Company Headquarters Essence Healthcare 13900 Riverport Drive Maryland Heights, MO 63043 Springfield Office CoxHealth MedicarePlus 3300 S. National Avenue, Suite 100 Springfield, MO 65807 Telephone lines are open 8 a.m. to 8 p.m., seven days a week. You may reach a messaging service on weekends from April 1 to September 30 and holidays. Please leave a message, and your call will be returned the next business day. View or download our Multi-Language Insert. Mailing address and fax number for written customer service, appeals and grievances requests: Essence Healthcare ­PO Box 5907 Troy, MI 48007 Fax: 1-888-480-2577 (customer service, claims and grievances requests) Fax: 314-770-6024 (appeals) *Please note that our main customer service number (above) is the designated number for submitting oral requests.