Exhibit 32.2

CERTIFICATION

PURSUANT TO 18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying Quarterly Report of Varian Medical Systems, Inc. (the “Company”), on Form 10-Q for the quarter ended June 28, 2013 (the “Report”), I, Elisha W. Finney, Executive Vice President, Finance and Chief Financial Officer of the Company, hereby certify pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002 that:

(1) the Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 6, 2013	/s/	ELISHA W. FINNEY
		Elisha W. Finney
		Executive Vice President, Finance and
		Chief Financial Officer