Educated at Sandringham High School and graduated as a dentist in 1989 from the University of the Witwatersrand. He joined a dental practice in Edenglen, Edenvale in 1991. In 1993 he bought the practice from the original dentist and ran the practice for 17 years. In 2002 he joined Dr Michelle Ferreira and Dr Theresa Yelverton at their practice in Parkmore, Sandton.He then bought the practice and has been running the practice ever since. Dr Horwitz has attended many continuing education courses both locally and in the UK and Israel. He has been Treasurer of the Paedodontic Society of South Africa –an organization dedicated to improving the oral health of the children in South Africa for 10 years and the President of the Johannesburg Chapter of Alpha Omega International Dental Fraternity for 12 years. Dr Horwitz has a keen interest in Cosmetic dentistry, paediatric dentistry, composite resin restorations, implant restorations and Endodontics. He is married to Charlene and has two children Gabriel and Kira.