Dr. Jeff, Jeffrey A. Hoffman, Ph.D., is a clinical psychologist with expertise in smoking cessation and drug treatment. As the Principal Investigator on several Federally funded research projects, he has published more than 25 research and clinical articles on topics relating to drug use and addiction.

Dr. Jeff is the President and CEO of Danya International, Inc., a rapidly growing company based in Silver Spring, Maryland, that strives to promote health and facilitate personal and economic growth around the world through the creative use of new technology.

Dr. Jeff initially created the Quit Commit Smoking Cessation Program as a single session that he conducts for the employees at Danya. The program was received with such enthusiasm that he decided to offer this simple program for free over the Internet to anyone interested in quitting smoking.