Innovative Pain
Management from
a Compassionate Team.
We Are Regenirex
At Regenirex, we’ve been providing patients with innovative and effective care for pain management in Kearney, across Nebraska, and the Great Plains since 2013. We’re proud of our reputation for advancing minimally-invasive, non-opioid solutions for chronic pain, resulting in positive outcomes and better quality of life for our patients. In the last few years we have added hormone optimization to our services and in the very near future we will be offering custom, individualized, precision health and wellness care.
Meet Our Providers
At the heart of Regenirex is our compassionate team of pain management providers. We deeply value the health and wellbeing of each and every patient we see.

BURT MCKEAG, MD
Dr. McKeag is board certified in anesthesiology and pain medicine by the American Board of Anesthesiology. He graduated from the University of Nebraska Medical Center and then did his residency in anesthesiology at the University of Kansas Medical Center. He practiced anesthesia for seven years and then returned to the University of Nebraska Medical Center where he completed a fellowship in pain management. He is the Medical Director of Kearney Pain Treatment Center. He practices pain management at Regenirex, LLC in Kearney, Nebraska. He has been using regenerative techniques to treat his patients since 2015. He is passionate about treating his patient’s underlying problem rather than covering up symptoms with narcotics.
PAM MCKEAG, MD
Dr. Pamela McKeag is board certified in anesthesiology by the American Board of Anesthesiology. She graduated from the University of Nebraska Medical Center and did her residency in anesthesiology at the University of Kansas Medical Center. Pam has a passion for health and wellness and wants to help people prevent disease and have the energy to pursue their purpose in life. She has completed training in advanced bio-identical hormone therapy through Worldlink Medical and a fellowship in precision medicine through Wild Health.


BRYAN MESSBARGER, APRN
Bryan Messbarger is a nationally certified Family Nurse Practitioner. He earned his Bachelors of Science in Nursing and Master of Science in Nursing degrees from the University of Nebraska Medical Center. He worked as a registered nurse at Good Samaritan Hospital for nearly 10 years and spent most of his time there in the intensive care unit. His time in critical care motivated him to help people prevent potential tragedies, and he transitioned to Regenirex in order to encourage people in wellness and healthy pain management. He has been recognized with the Nebraska Organ Recovery Service Green Cape Award, The DAISY Award for Extraordinary Nurses, and the Charlotte Burgess Award for Outstanding Masters Graduates. In his time off he enjoys playing music and spending time with his wife and two kids.
CHRISTINA KNISPEL, APRN
Christina Knispel was raised in Kearney, Nebraska and is a nationally certified Nurse Practitioner specializing in pain management. She earned her Bachelors of Science in Nursing from the University of Nebraska Medical Center. Christina later completed her Master of Science in Nursing from the University of Nebraska Medical Center where she graduated top of her class with distinguished honors. Prior to working in pain management, she worked as a registered nurse in critical care, cardiology, family practice, and as a Nurse Practitioner in Rheumatology. She is a member of the Academy of Integrative Pain Management, Association of Rheumatology Health Professionals, and Sigma Theta Tau nursing honor society.
