​Dr. Karl Nadolsky, DO, is a clinical endocrinologist and director of the Endocrine Clinic at the Gym in Holland, Michigan, where he specializes in endocrinology, obesity, and diabetes management. He also serves as an assistant clinical professor of medicine at Michigan State University College of Human Medicine and is board certified in Internal Medicine, Diabetes, Endocrinology & Metabolism, and Obesity Medicine.

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After earning his medical degree from Nova Southeastern College of Osteopathic Medicine, Dr. Nadolsky completed his internal medicine residency at Naval Medical Center Portsmouth, where he later practiced as an internist and obesity specialist. He went on to complete his endocrinology fellowship at Walter Reed National Military Medical Center, where he also helped develop and lead the Diabetes, Obesity & Metabolic Institute and contributed as faculty in the endocrinology fellowship program.

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Dr. Nadolsky currently serves as chair for the AACE Comprehensive Obesity Management Algorithm and is an active member of several leading medical organizations. He has contributed to national clinical guidelines and serves on editorial advisory boards. Prior to his medical career, he was a standout student-athlete at Michigan State University, earning multiple academic and athletic honors as a member of the varsity wrestling team.

Anna earned her Bachelor of Arts from Wartburg College and her Master of Physician Assistant Studies from Marquette University. Anna also completed advanced training in obesity medicine through the Obesity Medicine Association and has special interests in thyroid disorders and weight management. 

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Anna is dedicated to helping patients achieve better health through a personalized, whole-person approach to care. Anna believes that meaningful health improvements happen when evidence-based medicine is combined with practical lifestyle changes. She works collaboratively with patients to develop individualized treatment plans that support long-term success and help them live healthier, more fulfilling lives. 

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Outside of the clinic, Anna enjoys spending time with her husband and their two children. She also loves staying active, organizing and decluttering, and is a self-proclaimed coffee enthusiast. Having personally experienced Graves’ disease, Anna understands firsthand the impact endocrine conditions can have on daily life and brings both professional expertise and personal insight to the care she provides.​

Olivia has a passion for helping patients navigate the complexities of endocrinology, especially type 1 diabetes. Having lived with type 1 diabetes for more than 20 years, Olivia understands firsthand the challenges, decisions, and emotions that can come with managing a chronic condition. This unique perspective inspired her to pursue a career in endocrinology and allows her to connect with patients as both a provider and someone who has walked a similar path.

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Olivia believes that education and shared decision-making are essential to helping each patient achieve their health goals. She is committed to providing evidence-based care that emphasizes proactive treatment, early intervention, and prevention of long-term complications. Her goal is to ensure that every patient feels heard, supported, and empowered with the knowledge and tools needed to make informed decisions about their health.

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A Holland native, Olivia earned her Bachelor of Science from Alma College and her Master of Physician Assistant Studies from Trine University. Outside of the clinic, she enjoys spending time with her husband and miniature goldendoodle, staying active through exercise and sports, getting creative with crafts and home decorating, and soaking up summer days along the shores of Lake Michigan.

Michelle has more than 12 years of experience helping individuals manage diabetes and improve their overall health. She specializes in diabetes care, with particular expertise in insulin pump therapy and continuous glucose monitoring (CGM) technology. Michelle is passionate about empowering patients with the knowledge, tools, and confidence they need to successfully navigate life with diabetes. 

 

Outside of the clinic, she enjoys sailing and spending time outdoors with her goldendoodle on long walks.

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Val earned her degree in Nutrition from the University of Massachusetts Amherst and completed her dietetic internship at the University of Michigan Health System. She is passionate about helping patients move beyond all-or-nothing thinking to create sustainable, long-term lifestyle changes. Her approach focuses on cutting through the overwhelming amount of nutrition and exercise information available today and helping each patient find strategies that fit their unique goals and daily life. 

 

Outside of the clinic, she enjoys spending time with her two sons, reading, listening to podcasts, crocheting, camping, hiking, and gardening. 

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Sam completed her medical assistant training through Ross Medical Education Center. She is dedicated to helping patients navigate their healthcare experience and ensuring they have the support they need every step of the way.

Sam’s approach to patient care focuses on building trust through kindness, active listening, and reliable support. She believes every patient deserves to feel heard, valued, and cared for throughout their healthcare journey.

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As a wife to someone living with type 1 diabetes, diabetes care holds a special place in Sam’s heart and gives her a unique appreciation for the daily challenges many patients face. Outside of work, she enjoys spending time outdoors with her husband and two daughters, hiking with her family, tending to her flowers, and spending time with her goldendoodle. She is also known for keeping her porch goose, Lucy, dressed for every season and occasion.​

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Anna is dedicated to helping patients achieve better health through a personalized, whole-pers

Connie is often the first friendly face you’ll see when visiting our clinic, helping keep the office running smoothly while wearing many hats behind the scenes. A graduate of Hope College with a bachelor’s degree in Elementary Education, Connie was born in Laos and is bilingual in English and Laotian. She brings warmth, creativity, and a passion for helping others to her role every day. 

 

Outside of the clinic, she is a proud mom of five, a devoted plant enthusiast, and enjoys crafting, cooking, and baking. During her years as a stay-at-home mom, she also owned a small business creating handmade accessories. Although she didn’t discover her love for cooking until quarantine, it has since become one of her favorite hobbies.

Rachel earned a Bachelor of Science in Nursing from Purdue University and subsequently served as an officer in the United States Navy for ten years, achieving the rank of Lieutenant Commander.

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Her nursing experience spans multiple specialties, including medical-surgical nursing, hematology/oncology, and labor, delivery, and postpartum care. In addition, she has managed neurology and urology clinics. She currently manages the Endocrine Clinic at the Gym while continuing to practice as a labor and delivery nurse.