Other Hospital Affiliations: St. John's Health Center Other Training & Special Interests: Diplomate, American Board of Family Practice. Member, California Academy of Family Physicians. Dr. Hallis has been practicing in medicine since 1975. He was in private practice in rural Arizona where he did full-scope of family medicine from pediatrics, obstetrics, surgery to geriatrics. He started his practice in Santa Monica in 1981. He enjoys being a diagnostician and working with challenging…