Functional Healing by Harper MD is a functional medicine practice built on rigorous clinical training, deep experience, and a relentless commitment to helping people get well. Led by Dr. Dan Spindler, our team of physicians, practitioners, and coaches brings advanced postgraduate education in clinical nutrition and functional medicine to the complex, chronic conditions that conventional care often leaves unresolved. With over 20 years of combined experience and over 3,000 patients served, we specialize in weight loss resistance, peripheral neuropathy, type 2 diabetes, ADHD, autoimmune disease, and others where identifying and addressing root causes changes outcomes.

Through our virtual practice, we serve patients across the country, and we do it with conviction. We believe no one should be told to simply live with being sick. Every protocol we build is grounded in science, shaped by years of hands-on clinical work, and driven by a shared passion for restoring health.