Our Professional Team

Each Cenegenics® physician has completed the Clinical Strategies for Healthy Aging in Age Management Medicine program, sponsored by the Age Management Medicine Education Foundation (AMMEF), the educational division of Cenegenics® Education and Research Foundation (CERF) - providing our physicians with a specialized skillset to practice this medical specialty.

Robert Ledda, M.D.

Community Health & Wellness Center

Partner, Cenegenics® Alaska

Center Physician, Cenegenics® Las Vegas

Dr. Ledda began his practice over 25 years ago after graduating with honors from The University of Texas Southwestern Medical School. He then completed his residency in emergency medicine and went on to continue his learning in disease by doing a fellowship in Wellness and Precision Medicine in addition to becoming certified in age management medicine in 2013. He currently operates his own clinic on the grounds of his privately owned lodge in Soldotna, Alaska.

Dr. Robert Ledda, Community Health & Wellness Center Partner, Cenegenics Alaska Center Physician, Cenegenics Las Vegas

Annie Colbert

Nutrition & Exercise Counselor, Cenegenics® Alaska

Annie, a graduate of West Valley High School in Fairbanks, AK, joined Cenegenics® Elite Health in 1998 as a Nutrition & Exercise Counselor and Fitness Testing Specialist. She earned her Bachelor’s Degree of Science in Exercise Physiology from Northern Arizona University and a Master’s Degree in Human Nutrition from the University of Bridgeport. Annie has worked as a Certified Personal Trainer, Certified Jazzercise Instructor, Nutrition & Exercise Counselor assisting clients in all stages of life, and as an Adjunct Professor at the University of Alaska Fairbanks, where she teaches students nutrition science and instructs fitness and conditioning classes. She currently serves as a Clinical Assistant Supervisor at Cenegenics® Alaska in which she creates personalized nutrition and exercise programs for Dr. Ledda’s patients instructing them on how to make positive life-long improvements in their lives.

Annie Colbert, Nutrition & Exercise Counselor, Cenegenics Alaska

Derek Valencia

Service Coordinator

For the past 5 years, Derek has been a vital piece of the Cenegenics® Las Vegas team. He currently works for Dr. Robert Ledda as a service coordinator, while focusing on observing and understanding the inner workings of a 5-star company from an operational standpoint, because of his background in business development. He loves to watch positive and life changing transformations that each Cenegenics® patient undergoes. When Derek has spare time, he enjoys spending every minute with his wife and two beautiful daughters. Derek was highly praised at Cenegenics® Las Vegas because of his focused perseverance and his ability to connect with a variety of people, and his overall drive to succeed. 

Derek Valencia

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