Xtant Medical Holdings, Inc. announced the appointment of Ronald Berlin as Vice President & Chief Operations Officer, effective January 1, 2019. He will report to Michael Mainelli, the company's Interim Chief Executive Officer. He brings over 35 years of operations experience to the company. Most recently, he served as Vice President of Global Operations for CoorsTek Medical. Prior to that role, he held positions of Vice President, Global Strategic Sourcing and Procurement and Vice President, Operations for Integra LifeSciences.