Management Team

Gerald Commissiong

Mr. Commissiong serves as President of Provista Diagnostics. He has over ten years of experience in therapeutic and diagnostic development, including all aspects of product licensing, research collaborations, and go-to-market strategies. He is the former CEO and co-founder of Amarantus Bioscience, a company that developed LymPro, an Alzheimer’s diagnostic currently being advanced by Todos Medical.

Mr. Commissiong has raised over $70 million in research capital to forward numerous scientific development programs, including those currently underway at Todos. He is a former professional football player for the Calgary Stampeders of the Canadian Football League who received a Bachelor of Science degree in Management Science and Engineering with a focus in Financial Decisions from Stanford University.

Chris Gross
VP of Operations

Mr. Gross, MBA is the Vice President of Sales Operations at Provista. Mr. Gross was previously a Managing Director and Co-Founder at WellNova. Prior to that, he was the Chief Operating Officer at Solace Life Sciences where he managed B2B and B2C sales. Priorto Solace, Mr. Gross was a co-founder and Managing Director at Focused Evolution, Inc. Mr. Gross completed his bachelor’s degree in Chemical and Engineering at Western Michigan University and completed his MBA at the University of Delaware.

Elise Brownell, MS, MPhil, PhD
VP Research & Development

Dr. Brownell has diversified experience in the biopharmaceutical arena where she has played key roles in discovery, development, opportunity assessment, and Executive Leadership to drive innovation. She has deep experience in discovery research and development through her history at Bayer Healthcare and venture-backed startups, with a focus on rare/orphan diseases, and the bench-to-clinic transition. She earned her BS in Biology from Allegheny College and MS, MPhil and PhD in Biology from Yale University.

Chief Commercial Officer
  • Former President & CEO of Prism Health Diagnostics, Inc.
  • Former President & CEO of Singulex, Inc.

Timothy Seiler
Director of Supply Chain Operations

Timothy Seiler is the Director of Supply Chain Operations at Provista. Tim has been at Provista for a year specializing in Procurement and Logistics, while focused on S&OP processes, Supply Chain Planning and Purchasing, OTIF, Distribution, and Inventory Management. Tim has more than 10 years of Supply Chain Management experience previously serving as a government contractor for the Defense Logistics Agency. In 2009 Tim attended AASU completing an AS in Business Administration and is currently attending DAU completing a program in Supply Chain Integration.

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