Power of Attorney



I, Joseph B. Phair hereby constitute and appoint Elisha W. Finney,

Crisanto C. Raimundo, John Kuo, Mary O'Byrne, Alan Palter, Tai-Yun Chen,

and each of them individually, as my true and lawful attorney-in-fact to:



1. Complete and execute on my behalf as an officer and/or director of Varian

Medical Systems, Inc. (the "Company") any Forms 3, 4, or 5 required to be

filed by me under Section 16(a) of the Securities Exchange Act of 1934 and

the rules and regulations thereunder.



2. Do and perform any and all acts for and on my behalf which may be

necessary or desirable to complete any such Form 3, 4 or 5 and timely file

such form with the U.S. 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 of me, it being understood

that the documents executed by such attorney-in-fact on my behalf pursuant

to this Power of Attorney shall be in such form and shall contain such

information as such attorney-in-fact may approve in such attorney-in-fact's

discretion.



I hereby grant to each of such attorneys-in-fact full power and authority to

do and perform any and every act which is necessary or desirable to be done

in the exercise of any of the powers and authority granted in this Power of

Attorney, with full power of substitution and revocation, and I rarify and

confirm every act that such attorney-in-fact lawfully performs or causes to

be done by virtue of this Power of Attorney and the powers and authority

granted herein.



I acknowledge that the attorneys-in-fact appointed in this Power of Attorney,

in serving in such capacity at my request, are not assuming, and the Company

is not assuming, any of my responsibilities to comply with Section 16 of the

Securities and Exchange Act of 1934 or the rules or regulations thereunder.



This Power of Attorney shall remain in full force and effect until I am no

longer required to file Forms 3, 4 or 5 with respect to my holding or

transactions in securities issued by the Company, unless I earlier revoke

this Power of Attorney in a signed writing delivered to the foregoing

attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has executed this power of attorney

as of this _____ day of __________, 2003 at _____________.





     __________________________________________

     Joseph B. Phair



State of California



County of Santa Clara



On ________________, 2003, before the undersigned, a Notary Public for the

State of California, appeared Joseph B. Phair, personally known to me or

proved to me on the basis of satisfactory evidence to be the person whose

name is subscribed to the within instrument and acknowledged that he

executed the same, and that by his signature on the instrument the person

executed the instrument.



Witness my hand and official seal.



___________________________

Signature of Notary







My commission expires on _________________________.