Mary Ellen Doukakis, RDN | Sports Nutrition & Cardiac Dietitian Denver

With five decades of experience as a Registered Dietitian (RDN), including 30 years right here at the Clinical Nutrition Center in Greenwood Village, I have dedicated my career to the science of nutrition.

My philosophy goes beyond simple weight loss. Whether you are an athlete seeking a sports nutritionist to optimize performance, or a patient needing a cardiac diet to manage heart health, I provide evidence-based strategies. I believe that a comprehensive approach—combining a healthy meal plan, medical nutrition therapy, and behavior modification—is essential for lasting results for our patients in Aurora and Denver.

Nutrition is not one-size-fits-all.

My practice focuses on tailoring specific nutritional interventions to your medical and lifestyle needs:

Sports Nutrition: Customizing fuel for endurance and strength to help Colorado athletes perform at their peak.
Cardiac Health: designing heart-healthy meal plans to manage cholesterol and blood pressure.
Medical Weight Loss: Partnering with Dr. Lazarus to support patients on Wegovy® and Zepbound®, ensuring you maintain vital muscle mass while losing fat.

From Lone Tree to Centennial, I am honored to help patients reclaim their health through the power of food.

Larry

I feel blessed to have found Dr. Ethan Lazarus, medical obesity specialist, and Mary Ellen, nutritionist, at CNC. The support, knowledge, communication and commitment to the patient far surpasses my experience in any other medical setting. They guided my through two successful joint replacements while maintaining a stable weight and continued good health. I highly recommend this practice to anyone who chooses to improve their health and well being.

Cindy

“After starting with the clinic, I met with Nutritionist, Mary Ellen, weekly… Mary Ellen has been such a great inspiring part of my journey! She has given me a lot of good advice and helpful information… Working with the Clinical Nutrition Center has helped me lose over 100 pounds!” – Cindi, lost 100+ lbs

Vicki

“Dr Lazarus is personable, caring, kind and not shaming at all. He adjusted medication and with the help of a wonderful nutritionist, MaryEllen, within 6 months I lost 40 pounds with out being hungry…. My cholesterol is back to normal, my clothes fit, and my self esteem feels so much better that I’m not to blame. What a team!!” – Vicki, lost 40 lbs

Mary Ellen Doukakis, RDN: Expert Dietitian in Denver & Greenwood Village

Decades of Nutrition Expertise in Denver

Specialized Nutrition: Heart Health & Athletic Performance

An Inspiring Force for Patient Success

Maximizing Your GLP-1 Journey

My Goal: Health and Longevity

Ready to Have an Inspiring Partner on Your Journey?

You don’t have to do this alone. Our team is ready to provide the expert guidance and compassionate support you need to succeed. The first step is a simple conversation.