Exhibit

We are aware that our report dated May 9, 2017 on our review of interim financial information of Varian Medical Systems, Inc. for the three and six month periods ended March 31, 2017 and April 1, 2016 and included in the Company's quarterly report on Form 10-Q for the quarter ended March 31, 2017 is incorporated by reference in its Registration Statements on Form S‑8 (No.333-188693, No.333-168444, No. 333-168443, No. 333-146176, No. 333-130001, No. 333-152903, No. 333-123778, No. 333-75531, No. 333-57006, No. 333-57008, No. 333-57010, and No. 333-161307).

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