Lauren Fitzgerald, MD (“Dr. Fitz”) is a physician, entrepreneur, and wellness advocate dedicated to helping patients reclaim their health through an integrative, optimization-focused approach. A “recovering anesthesiologist,” she left the operating room in 2016 after years of practice in Texas, Oklahoma, and Japan to focus on prevention, longevity, and root-cause medicine. As Founder and CEO of Larimar Med in St. Charles, Illinois, Dr. Fitzgerald has built a “one-stop shop” for total body wellness that blends functional medicine, bioidentical hormone optimization, biohacking, advanced aesthetics, and IV nutrition therapies. She is known for her ability to translate complex science into practical, faith-aligned guidance, empowering patients to actively participate in their own healing and long-term vitality. A sought-after speaker, educator, and podcast guest, Dr. Fitzgerald uses social media and digital education to expand access to evidence-informed wellness, with a special focus on women’s health, hormones, and healthy aging. Grounded in her medical training and driven by a belief that “investing in you is the best investment you’ll ever make,” she continues to champion a model of healthcare that prioritizes optimization over disease management.
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Dec 16, 2025
Lauren Fitzgerald
Marcus Zeal
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