EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of

Omnicell, Inc.

Mountain View, California

We consent to the incorporation by reference in the Registration Statements (Form S-3 No. 333-117592, Form S-8 Nos. 333-67828, 333-82818, 333-104427, 333-107356, 333-116103, 333-125080, 333-132556, 333-142857, 333-149758, 333-159562, 333-176146, 333-190930, and 333-205465) of our reports dated February 28, 2017, relating to the consolidated financial statements and financial statement schedule of Omnicell, Inc. and subsidiaries (the “Company”) and the effectiveness of the Company's internal control over financial reporting appearing in this Annual Report on Form 10-K of the Company for the year ended December 31, 2016.

/s/ Deloitte & Touche LLP

San Jose, California

February 28, 2017