Ready for a Fresh Start?Start with our March Events!

Weight Loss Team Bios

Meet Our Weight Loss Team

From our world-renowned weight loss researchers, MDs and registered dietitians to our front desk staff, we have the best in the business.

  • Holly Wyatt, MD

    Holly Wyatt, MD

    Holly Wyatt, MD - Medical Director & Associate Professor

    A physician and clinical researcher, Holly has extensive experience in weight loss using medications and behavioral, dietary, physical activity and surgical treatments.

    Holly is co-author of State of Slim, revealing how Coloradans get and stay slender. As medical director of Extreme Weight Loss, she uses these principles to guide cast-member journeys.

    Her research interests include resting and total energy expenditure, fat oxidation and activity levels in weight-reduced populations. She studies the effect of diet on long-term success, as well as weight loss with Atkins’ vs. low fat-high carb diets and diet composition, exercise patterns and breakfast consumption in the National Weight Control Registry.

  • Margaret Eagan, MD

    Margaret Eagan, MD

    Margaret Eagan, MD - Assistant Professor

    Education & Certifications

    • MS, Georgetown University
    • Fellowship, University of Colorado

    Areas of Specialization

    • Endocrinology
    • Preventative health care
    • Promoting wellness through engaging mind, body and spirit
    • Developing personalized lifestyles to support individual client lives
    • Mindfulness-based programs for executives and baby boomers


    • “Take care of your body. It’s the only place you have to live.”  – Jim Rohn

    Personal Notables

    • Founded and ran Canterbury Wellness Center (CWC) from 1998-2012
    • Helped coordinate the Girls Athletic Leadership School (GALS) nutrition program
    • Organized ongoing seminar series in support of the GALS mission

  • Marc-Andre Cornier, MD

    Marc-Andre Cornier, MD

    Marc-Andre Cornier, MD - Associate Professor

    Education & Certifications

    • BS, Vanderbilt University
    • MD, Medical College of Georgia
    • Residency/Internship, Georgetown University
    • Endocrinology Fellowship, University of Colorado

    Areas of Specialization

    • Obesity
    • Food intake regulation
    • Neuroimaging
    • Insulin action



    Personal Notables

    • Associate director, CU Adult Diabetes Program
    • Director, University of Colorado Health LDL Apheresis Program
    • Medical director, My New Weigh meal-replacement weight-loss program
    • Staff physician, Denver Health
    • Active volunteer for the American Diabetes Association, American Heart Association, the Endocrine Society and the Obesity Society

  • Victoria Catenacci, MD

    Victoria Catenacci, MD

    Victoria Catenacci, MD - Assistant Professor

    Education & Certifications

    • BA/BS, University of Notre Dame
    • MD, Yale University
    • Internal Medicine Residency, Yale-New Haven Hospital
    • Chief Resident, Yale-New Haven Hospital
    • Board Certification in Endocrinology

    Areas of Specialization

    • Physician-directed weight management


    • Individualized behavioral strategies for weight management along with weight-loss medications for appropriately selected patients.

    Personal Notables

    • Varsity Monogram Winner, Women’s Diving, University of Notre Dame
    • NIH F32 National Research Service Award
    • NIH K23 Career Development Award
    • Principle investigator of five-year NIH-funded R01 to evaluate the optimal time to begin exercise within a behavioral weight-loss program

  • Jacinda Nicklas, MD, MPH, MA

    Jacinda Nicklas, MD, MPH, MA

    Jacinda Nicklas, MD, MPH, MA - Assistant Professor

    Education & Certifications

    • BA/MA, Stanford University
    • MD/MPH, Harvard University
    • Internal Medicine Residency, Brigham and Women’s Hospital
    • General and Integrative Medicine Fellowship, Harvard University

    Areas of specialization

    • Internal medicine
    • Researches women’s health, obesity, weight loss and disease prevention
    • Weight control throughout the reproductive cycle
    • Helps postpartum women lose weight and decrease diabetes and cardiovascular disease risks


    • Most people cannot lose weight on their own. When you’re ready, I can help you achieve your goals.

    Personal Notables

    • Completed a half Iron Man with mom to celebrate her 70.3-year birthday
    • Loves to run, bike and ski
    • Likes to cook vegetables

  • Erin Cunningham, MA

    Erin Cunningham, MA

    Erin Cunningham, MA - Director of Wellness Programs, Training and Leadership Development

    Education & Certifications

    • PhD Candidate/MA/BS, Colorado State University
    • Certified Social and Emotional Intelligence Coach, Certified Facilitator, Leader as Coach, Institute for Social and Emotional Intelligence
    • Certified Master Career Coach, Manager as Coach Leadership Series, Certified Facilitator, Career Partners International

    Areas of Specialization

    • Health, wellness, athletics coach
    • Leadership development
    • Social and emotional intelligence coach
    • Career and executive coach
    • State of Slim Instructor


    • “Most of us have far more courage than we ever dreamed possible.” – Dale Carnegie

    Personal Notables

    • NCAA Division I Cross-Country Track and Field, Colorado State University
    • Completed 10 marathons

  • Marsha Miller, MS, RD

    Marsha Miller, MS, RD

    Marsha Miller, MS, RD - Senior Registered Dietitian & Senior Professional Research Assistant

    Education & Certifications

    • MS/RD, St. Louis University
    • BS, University of Nebraska ‑ Lincoln

    Areas of Specialization

    • Weight loss and wellness transformations
    • State of Slim coach
    • Diabetes research and interventions
    • Individual and small-group interventions


    • Wellness changes everything! YOU can accomplish anything you put your mind to. Food is fuel.

    Personal Notes

    • Love to spend time outside being active with my son, Cody, and dog, Sammi
    • Endurance cyclist and enjoy all water sports
    • Passionate about helping others with their transformation

  • Tracy Mann, MS, RD

    Tracy Mann, MS, RD

    Tracy Mann, MS, RD - Registered Dietitian

    Education & Certifications

    • BS, University of Nebraska-Lincoln
    • MS, Central Michigan University
    • RD, University of Nebraska Medical Center-Omaha

    The journey toward health and wellness is very personal. Although there are many broad nutrition recommendations to use as guidelines, I will individualize recommendations for each client. I also work with my clients’ entire team–physician, trainer, or anyone else involved in reaching their goals.

    Areas of Specialization

    • Weight loss; weight maintenance
    • Functional/integrative nutrition
    • Sports nutrition
    • PCOS

    Personal Notables
    Enjoys the interpersonal relationships developed with clients
    Love spending time with family, especially my three kids!

  • Kristin Speaker, PhD

    Kristin Speaker, PhD

    Kristin Speaker, PhD - Postdoctoral Fellow

    Education & Certifications

    • PhD/MS/BA, University of Colorado
    • Doctoral training in psychoneuroimmunology and exercise physiology

    Areas of Specialization

    • Nutrition, exercise and mindset strategies for improving body composition
    • Impact of the mind-body connection on weight loss and maintenance
    • Links between obesity and cardiovascular disease


    • To change the body you must change the mind.
    • The best solution is usually the simplest one.
    • Thinking and planning are great as long as they don’t get in the way of doing.
    • An ounce of prevention is worth a pound of cure.

    Personal Notables

    • 2014 Mile-High Classic NPC Figure Competitor (4th overall)
    • Loves to read, train, dance, listen to music and snowboard

  • Lisa Zucker

    Lisa Zucker

    Lisa Zucker - Registered Dietitian

    Education & Certifications

    • MS, New York University

    Areas of Specialization

    • Nutrition
    • Researches investigational medications, nutritional supplements, behavioral, dietary and physical activity models
    • Facilitates community and small group weight loss programs, including My New Weigh and Colorado Weigh


    • Inspire people to move along the spectrum of better health no matter where they are. Anyone can make improvements to their health, even with small, meaningful changes. There are many roads to weight loss; commitment is the most important part.

    Personal Notables

    • Consulted with organizations like Johnson and Johnson and the Julliard School on corporate wellness programs and nutrition

  • Staci Barton Lupberger MS, RD

    Staci Barton Lupberger MS, RD

    Staci Barton Lupberger MS, RD - Assistant Director

    Education & Certifications
    MS, Human Nutrition/Food Science, Colorado State University
    BS, Dietetics, Northern Colorado University
    BA, Media Arts/Journalism, University of Arizona
    Registered Dietitian

    Areas of Specialization
    Health & Wellness
    Clinical Trials Project Management
    State of Slim Coach

    “Optimism is the faith that leads to achievement.” – Helen Keller

    Personal Notables
    200 hour Registered Yoga Teacher (RYT)
    4 time Marathon Finisher
    ….and mother of a beautiful, inquisitive and amusing son!

What's New?

Find Us On Facebook

Contact Us

Fitness Center: 303-724-WELL (9355)

Wellness Clinic: 303-724-9030


12348 E Montview Blvd.
Aurora, CO 80045