Michael D. West is a gerontologist, and a pioneer in stem cells, cellular aging and telomerase. He is the founder and CEO of AgeX Therapeutics, a startup focused on the field of interventional gerontology, and Co-CEO of its parent company, BioTime, Inc. of Alameda, California (San Francisco Bay Area), a biotechnology company regarded as a leader in the field of regenerative medicine with a focus on cell therapy.