Know all by these presents, that the undersigned hereby
constitutes and appoints each of Edward C. Lee, William C.
Baskin III, and Adam F. McAnaney, signing singly, the
undersigned's true and lawful attorney-in-fact to:
(1) execute for and on behalf of the undersigned, in
the undersigned's capacity as an officer and/or
director of Aetna Inc., a Pennsylvania
corporation ("Aetna") Forms 3, 4, and 5 in
accordance with
Section 16(a) of the Securities Exchange Act of
1934 and the rules thereunder;
(2) do and perform any and all acts for and on behalf
of the undersigned which may be necessary or
desirable to complete and execute any such Forms
3, 4, or 5, complete and execute any amendment or
amendments thereto, and file such form with the
United States Securities and Exchange Commission
and any stock exchange or similar authority; and
(3) take any other action of any type whatsoever in
connection with the foregoing which, in the
opinion of such attorney-in-fact, may be of
benefit to, in the best interest of, or legally
required by, the undersigned, it being understood
that the documents executed by such attorney-in-
fact on behalf of the undersigned pursuant to
this Power of Attorney shall be in such form and
shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-
fact's discretion.
The undersigned hereby grants to each such attorney-in-fact
full power and authority to do and perform any and every act and
thing whatsoever requisite, necessary, or proper to be done in
the exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution
or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-
fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any
of the undersigned's responsibilities to comply with Section 16
of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to file Forms
3, 4, and 5 with respect to the undersigned's holdings of and
transactions in securities issued by Aetna, unless earlier
revoked by the undersigned in a signed writing delivered to the
foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power
of Attorney to be executed as of this 1st of December, 2017.
/s/ Ellen M. Hancock
Ellen M. Hancock
