Hart is a graduate of the Caduceus Institute of Classical Homeopathy, certified by the Council for Homeopathy and registered with the North American Society of Homeopaths. He has worked for WholeHealthNow and HomeoAide, and he helped develop the HomeopathicHousecall online remedy finder. Hart works mostly with kids with allergic complaints, ranging from hay fever and eczema to asthma and anaphylaxis.