Neil Nathan, MD

Dr. Neil Nathan, MD, is a pioneering family physician and internationally recognized expert in integrative and functional medicine, with over 50 years of experience treating chronic complex illnesses, including 30 years focused on Lyme disease and environmental toxicities. A Founding Diplomate of the American Board of Integrative Holistic Medicine and the International Society for Environmentally Acquired Illness (ISEAI), he practices at the Redwood Valley Clinic in Northern California, offering consultations worldwide through telemedicine. Dr. Nathan's groundbreaking books, including Mold and Mycotoxins: Current Evaluation and Treatment (updated 2022) and Toxic: Heal Your Body from Mold Toxicity, Lyme Disease, Multiple Chemical Sensitivities, and Chronic Environmental Illness, have educated thousands on biotoxin-related conditions, emphasizing the Cell Danger Response and personalized protocols for detoxification, immune modulation, and recovery. Specializing in Chronic Inflammatory Response Syndrome (CIRS) and mold toxicity—often the "missing link" in multisystem symptoms—he guides patients through urine mycotoxin testing, environmental assessments, and tailored strategies to alleviate fatigue, brain fog, and inflammation, while advocating for awareness through lectures and mentorship.