POWER OF ATTORNEY

Know all by these presents that the undersigned hereby constitutes
and appoints each of William J. O'Shaughnessy, Jr., Michael E.
Prevoznik and Elena H. Radine, signing singly, his true and lawful
attorney-in-fact to:

(1)    execute for and on behalf of the undersigned 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 the execution
of any such Form 3, 4 or 5 and the timely filing of such form with the
United States ecurities and Exchange Commission and any other 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 document executed 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 his/her discretion.

The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform all and every act and thing whatsoever
requisite, necessary and 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 any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange
Act of 1934.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 16th day of February, 2017


/s/ Everett V. Cunningham
EVERETT V. CUNNINGHAM

STATE OF New Jersey    )
            ) ss.
COUNTY OF Morris    )

On this 16th day of February, 2017, before me, DAWN M. LEAHY, the undersigned
notary public, personally appeared EVERETT V. CUNNINGHAM, proved to me on the
basis of satisfactory evidence to be the person whose name is subscribed to
the within instrument, and acknowledged to me that he executed the same for
the purposes therein stated.


/s/ Dawn M. Leahy
Notary Public
My Commission Expires: September 12, 2018