The "Michigan Addendum to Caremark Provider Agreement" (beginning on page 160) has been deleted in its entirety and replaced with the following: The Caremark Provider Agreement is hereby amended as set forth in the Provider Agreement to incorporate the following language. In the event any provision in this Addendum conflicts with the terms of the Provider Agreement (including the Provider Manual and Caremark Documents), the terms of this Addendum shall govern. To the extent that Provider shall provide Pharmacy Services to Eligible Persons enrolled with a Health Maintenance Organization ("HMO"), Insurer, or Carrier licensed under Michigan law (collectively and/or individually, "Plan Sponsor"), Provider agrees to comply with any requirements for participation as a Provider in Michigan as follows:

Effective January 1, 2016, CVS/caremark will begin to administer the prescription benefits for Chesapeake Energy Corporation. Please update or create plan member profiles to reflect the changes regarding the following new plan adjudicating through CVS/caremark. RXBIN: 004336 RXPCN: ADV RXGRP: RX1170 Member ID Format: KPK+9 digits Person Code : Not required

Effective January 1, 2016, CVS/caremark will begin to administer the prescription benefits for Elder Plan Medicare-Medicaid plan members. Please update or create plan member profiles to reflect the changes regarding the following new plan adjudicating through CVS/caremark. RXBIN: 004336 RXPCN: MEDDADV RXGRP: RX8587 Member ID Format: 11 digits Person Code : Not required

Effective January 1, 2016, CVS/caremark will begin to administer the prescription benefits for Elderplan. Please update or create plan member profiles to reflect the changes regarding the following new plan adjudicating through CVS/caremark. RXBIN: 004336 RXPCN: MEDDADV RXGRP: RX8585 Member ID Format: 11 digits Person Code : Not required

Dear Provider:     Our Pharmacy Adjudication System will be unavailable for a scheduled downtime for approximately 60 minutes on Wednesday December 16, 2015. This is scheduled to start at 10:00 PM Central Time and will be complete by 11:00 pm Central Time.  Pharmacies submitting claims during this time will receive the following Reject Code and Messaging:   System Unavailable   Should you have any questions regarding this communication, please contact our Pharmacy Help Desk at 1-800-361-4542.   Thank you, EnvisionRxOptions