POWER OF ATTORNEY

Know all by these presents that the undersigned hereby constitutes
and appoints each of William J. O'Shaughnessy, Jr. and Michael E. Prevoznik,
signing singly, his/her 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 Securities 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 17th day of November, 2022.

/s/ Patrick T. Plewman
PATRICK T. PLEWMAN

STATE OF NEW JERSEY             )
                            ) ss.
COUNTY OF HUDSON        )

On this 17 day of November, 2022, before me, SYLVIA SYTSMA, the undersigned
notary public, personally appeared PATRICK T. PLEWMAN, 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.

WITNESS my hand and official seal.

/s/ SYLVIA SYTSMA
My Comm. Expires: 10/5/2024