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Exercise Physiologists

Elizabeth Andrus

Elizabeth grew up in the greater Grand Rapids area. Her first job out of high school was as a fitness instructor at the YMCA, which was the beginning of a passion to help others enjoy exercise. She decided on pursing her love of fitness and exercise, earning a degree in Kinesiology at Michigan State University in 2003. She was blessed to have an internship with Ingham Regional Medical Center, which led her to exercise education with with weight management patients.

Elizabeth has worked in health promotion in various settings, including, at a hospital, a college and various health clubs throughout her career. Elizabeth’s goal is to foster a love of exercise in others. She wants everyone to find activities they love to do, so they will stick with them for life.

Elizabeth lives in Grandville with her husband Tony and their four children. She loves her community because she can walk or bike to all her favorite spots. She spends her days homeschooling her kids and enjoying life.


Jaime Canada

Profile coming soon!


Amber Flynn

Amber grew up in Whitehall, MI and moved to the Fruitport area in 2001. Amber attended Muskegon Community College in high school and transferred to Central Michigan University where she received a Bachelors of Science in Physical Fitness for Preventative and Rehabilitative Programs and a second degree in Psychology. Amber performed an internship in cardiac rehabilitation and began work in the cardiac unit of Mercy Hospital. After graduating in 1998, Amber found her niche and began her career in weight management.

Amber has worked in hospital, retirement and community based wellness programs throughout her career. Amber believes in each persons ability to achieve great personal success, given the right tools in health and wellness education, motivation and opportunity. She feels strongly that exercise can fit everyones lifestyle, you may just need to make modifications.
Amber resides in Fruitport with her husband John and their two children. Amber enjoys tennis, walking, swimming and most of all spending time with family. Amber feels teaching children to be active at a young age is not only enjoyable and rewarding, but gives them a boost in the right direction for the future.


Andy Retberg, M.Ed.

Andy Retberg

Andy grew up in South Haven, MI and moved to the Grand Rapids area in 1995 to attend Grand Valley State University. Receiving his Bachelors of Science in Physical Education with an emphasis in Fitness and Wellness, Andy then completed a Masters of Education while working as a graduate assistant in the University’s Health, Recreation and Wellness Department. He is also a Certified Health and Wellness Coach through the Wellcoaches corporation.

Andy has worked in both community and hospital based wellness programs throughout his career, though specializing in exercise and weight loss since 2005. Andy feels truly blessed to have the opportunity to be part of each patient’s wellness journey. He believes exercise is a tool that not only assists in weight loss, but helps condition our body, allowing us do the things that bring joy and fulfillment to our lives.

Andy resides in Hudsonville with his wife Melanie and their three children, Emma, Lily, and Isaac. Andy is an avid runner, bicyclist, and off road motorcyclist, although his most cherished time is that spent with his family. They enjoy taking their black lab for walks, playing at the park, and spending time with friends and family.

About Grand Health Partners

At Grand Health Partners, we believe that people who succeed in making their lives healthier are happier. Our mission is to help people improve their health through a well-rounded approach to weight loss. To better fit your lifestyle and your needs, we provide both surgical and non-surgical weight loss programs. Our programs are led by a group of independent bariatric surgeons who have a passion for providing excellent patient care. Weight loss is our specialty. We will provide coaching for dietary, behavioral, and exercise habits while you are monitored by licensed bariatric physicians. Because we understand that genetic, social, cultural, and emotional factors lead to obesity, our patients are properly supported and equipped throughout their weight loss journey.

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Contact Us

Grand Health Partners - Grand Rapids
2060 E. Paris Ave SE Suite 100
Grand Rapids, MI 49546
616-956-6100
1-888-691-0050

Grand Health Partners - Petoskey
521 Monroe St
Petoskey, MI 49770
616-956-6100