Since 1995 Dr. Ann Hathaway has successfully treated thousands of patients with the tools of functional medicine, bioidentical hormone replacement, the ReCODE–Reversal of Cognitive Decline–protocol, and environmental medicine.
Ann has been studying functional medicine since 1995 and is a member of The Institute for Functional Medicine. She is an expert in bio-identical hormone therapy and often lectures on the topic. Dr. Hathaway is a member of The International Society of Environmentally Acquired Illness (ISEAI) which seeks to develop physician expertise in the treatment of tick-borne and viral diseases, and toxicity arising from chemical, mold, and heavy metal exposures.
Ann has been working with patients who have cognitive decline since 2014 when she first read Dr. Dale Bredesen’s paper, Reversal of cognitive decline: A novel therapeutic program. The crux of the protocol is to search for and correct all the underlying factors contributing to cognitive loss. Correction of root causes is the central principle of functional medicine. Ann finds that helping people regain clarity of mind requires dedication, patience, and persistence, and in her experience, these efforts with patients are extremely rewarding.
Dr. Hathaway was board-certified in Family Practice Medicine in 1983 and practiced conventional medicine for many years until she became disenchanted with the “prescription to cover up the symptom” for every ailment. She found that many health issues did not have satisfactory solutions in conventional medicine. She began to search and explore for better answers and eventually found organizations of physicians like her who were searching for underlying causes and striving for real solutions
Dr. Hathaway graduated summa cum laude from The University of California Berkeley in 1975, The University of California Medical School in San Francisco in 1979, and completed her residency in Family Practice in 1983 at Natividad Medical Center of Monterey County, California.

Ann Hathaway, MD