Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements on Form S-3 Nos. 333-117592 and 333-221332 and 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, 333-205465, 333-225179, 333-231669, and 333-256979 of our reports dated February 25, 2022, relating to the financial statements of Omnicell, Inc. and the effectiveness of Omnicell, Inc.’s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2021.

/s/ Deloitte & Touche LLP

San Jose, California

February 25, 2022