Esther Owusu, MS

Director of Research

Esther Owusu serves as Director of Research at Comprehensive Pain and Spine Specialists, where she leads site operations for multi-center clinical trials and manages the practice’s toxicology laboratory. Her work bridges laboratory science and clinical research, with a focus on maintaining high-quality diagnostic testing, and adherence to research protocols to support patient care.
 
Esther holds a Master of Science in Chemistry from The University of Texas Rio Grande Valley and a Bachelor of Science in Chemistry from Kwame Nkrumah University of Science and Technology. With experience grounded in Good Clinical Practice (GCP) and laboratory management, she brings a meticulous, detail-oriented approach to research operations, laboratory workflows, protocol compliance, and data quality.
 
Outside of the lab and clinic, Esther enjoys staying active at the gym and unwinding with a good book.

Stephen A. Gephardt, MD

Education and Achievements

Education

  • Medical Degree: Indiana University School of Medicine
  • Fellowship: Arizona Pain Specialists – Scottsdale, AZ

Achievements

  • Served as the head of Trauma Anesthesia at UMC Trauma Center from 1998 – 2003
  • Co-founded PBS Anesthesia in 1995
  • Member of the American Medical Association, Clark County Medical Society, Arizona Medical Association, Nevada Medical Association, and American Society of Interventional Pain Physicians.