Exhibit 23.4
Consent of Independent Auditor
We hereby consent to the reference to our firm under the caption “Experts” in this Registration Statement on FormS-3 and related Prospectus of Alphatec Holdings, Inc. and the incorporation by reference herein of our reports dated February 5, 2018 (April 16, 2018 as to Note 11), relating to the financial statements of SafeOp Surgical, Inc. for the year ended December 31, 2017, and our report dated February 16, 2017, relating to the financial statements of SafeOp Surgical, Inc. for the year ended December 31, 2016, which reports appear as exhibits to the FormS-3 filed by Alphatec Holdings, Inc. on April 16, 2018.
/s/ Nanavaty, Nanavaty & Davenport, LLP
Newtown, CT
April 16, 2018
