Executive Leadership



Paul Gunnoe, Chairman & Chief Executive Officer

Paul has over 25 years of healthcare experience and a strong track record of success as an entrepreneur and CEO of multiple and successful healthcare businesses. His experience as a healthcare CEO ranges from successfully exited startups to public companies.

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David Rentschler, President

David has been a value creator and entrepreneur for 30 years. He has founded or purchased 15 businesses and specializes in turning stagnant businesses into high growth companies. These companies include the David Douglas Corporation, Honor Snack, LLC., Blue Chip Holding Company, Tree Town, LLC., Travel Nurse Solutions, Jackson Healthcare Staffing and Medical Travel Solutions.

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Dan Frederick, MD, Onyx President

Dr. Frederick was born in New Orleans, LA. He completed his undergraduate studies with a Bachelor of Arts in Psychology at the University of Texas in Austin with a focus on pre-med studies. He then went on to receive his medical degree at the University of Texas Medical Branch in Galveston, Texas in 1999.

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