About Us

Based on his personal frustrations with existing tools in his spinal surgery practice, Jeff Kleiner, M.D. founded Kleiner Device Labs in March 2013 together with John Grimberg and Harris Kirschner. Kleiner Device Labs goals are to improve the tools available to spine surgeons making procedures easier, faster and with higher success rates, to improve outcomes for patients, and to lower costs for hospitals, employers and insurers.

Jeff Kleiner, MD

President & CEO


Dr. Kleiner trained at Stanford University, University of Colorado, Rush/Presbyterian-St. Luke’s Hospital in Chicago and University of CA at San Diego for pre-medical, medical and residency training.  He was a NIH postdoctoral fellow in the biochemistry of tendons and ligaments and fellowship trained in adult and pediatric reconstructive spinal surgery. His practice is limited to the care and treatment of spinal disorders. 

Frustration with existing tools and instrumentation systems led him to develop a suite of tools and techniques which allow performance of open and minimally invasive spinal surgery to be safer, easier and more efficient. Multiple patented and patent pending systems make up the intellectual property of Kleiner Device Labs.

John Grimberg

Chief Technical Officer

Mr. Grimberg is a principal technical specialist for Ball Aerospace Technologies Corp. His expertise has been in the development of infrared and ultraviolet light detectors (cameras) for the Hubble Space Telescope and other space-born remote sensing instruments. 

He is the design engineer for Kleiner Device Labs, developing and building specialized tooling for minimally invasive spinal surgical procedures. Mr. Grimberg is a respected metal and glass sculpture artist.


Harris Kirschner

Chief Financial Officer


Mr. Kirschner, is a University of Denver graduate with degrees in finance, economics and international studies. He is a partner for 3rd Creek Investments.

In addition to assisting in the management of the 3rd Creek portfolio, Mr. Kirschner was named as the Chief Financial Officer for Kleiner Device Labs and is guiding the financial concerns of the company.


Brad Samson 

Chief Commercial Officer


Mr. Samson brings to the team experience across multiple facets of the medical and healthcare industry, leading business development, marketing, communications, finance and public policy for companies from start-ups to Silicon Valley unicorns. Those include Axolotl Biologix, Fitbit, Vocera, Welltok and Trizetto.

Mr. Samson holds an MBA and BS in Finance from the Daniels College of Business at the University of Denver.