1. Founder and Managing Director of Farzanegan Nik Andish Institute for the Development of Knowledge and Technology, Tehran, Iran
2. National Professional Officer, NCD and Mental Health Unit Head, World Health Organization Country Office, Tehran, Iran
3. WHO Representative, Islamic Republic of Iran
4. National Consultant, World Health Organization Country Office, Tehran, Iran
5. Research Center for Addiction and Risky Behaviors (ReCARB), Psychiatric Department, Iran University of Medical Sciences, Tehran, Iran