The team at Colorado Stem Cell Center

Dr. Jack Rentz

Medical Doctor

Dr. Robert J. Bess

Dr.

Jack Rentz, MD

Pain Management / Board-Certified Physician

Board-certified in anesthesia and pain medicine, Dr. Rentz earned his doctorate from the Medical College of Georgia and completed his anesthesiology residency at Ochsner Hospital in New Orleans, where he served as chief resident. He then completed a fellowship at the Pain Medicine Center at Texas Tech University before relocating to the Denver Metro area.

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Robert J. Bess, M.D., FACS

Orthopedic Surgeon / Board-Certified Physician

Dr. Bess grew up in Denver, CO and completed his medical school, internship, and residency at the University of Colorado. He served as Director of the Children's Hospital fracture clinic for 8 years and was the Cherry Creek High School football team doctor for 15 years. He currently serves as Medical Director of the Bioscience division of Korean company Aegis Spine.