Exhibit 15.1
Acknowledgement Letter re: Unaudited Interim Financial Information
May 2, 2017
The Board of Directors and Shareholders
CVS Health Corporation
We are aware of the incorporation by reference in the Registration Statement (FormS-3) of CVS Health Corporation for the registration of debt securities of our report dated May 2, 2017 relating to the unaudited condensed consolidated interim financial statements of CVS Health Corporation that are included in its Form10-Q for the quarter ended March 31, 2017.
/s/ Ernst & Young LLP
Boston, Massachusetts