Cadent Medical Communications S-4/A Registration of securities issued in business combination transactions (amended)

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Amendment No. 3 to Registration Statement on Form S-4 of our report dated March 28, 2014 (July 29, 2014 as to notes 20 through 23) relating to the financial statements of inVentiv Health, Inc. and its subsidiaries appearing in the Prospectus, which is part of this Registration Statement.

We also consent to the reference to us under the heading “Experts” in such Prospectus.

/s/ Deloitte & Touche LLP

Boston, Massachusetts

February 10, 2015