Below is a list of past projects Dr. Zimmer has worked on in his career and his role in those projects.
| Title | Years | Funder | Role |
| Early Life Conditions, Survival, and Health: A Pedigree-Based Population Study | 2011- 2017 | National Institutes of Health – National Institute of Aging | Co-Investigator |
| Multidimensional Pathways to Healthy Aging among Filipino Women | 2011- 2017 | National Institutes of Health – National Institute of Aging | Consultant |
| The Mekong Region Development Research Group |
2013- 2016 | Henry Luce Foundation’s Asia Responsive Grant Program | Co-coordinating Partner |
| Cambodian Rural Urban Migration Project -CRUMP | 2011- 2013 | United Nations (UNFPA) | Principal Investigator / UN Consultant |
| Modeling Disability Trajectories in Rapidly Aging Populations | 2010- 2014 | National Institutes of Health (NIA) | Principal Investigator |
| The Impact of Migration of Adult Children on the Well-Being of Older Parents in Romania | 2010- 2012 | Center on Aging, University of Utah | Co-Principal Investigator |
| International Sociological Association Travel Award Grant – SES-0852624 | 2010 | National Science Foundation | Participant /Presenter |
| The Impact of Migration on the Family and Intergenerational Solidarity | 2009- 2011 | Doha Institute for Family Studies & Development | Principal Investigator |
| Disability Trajectories Among Older Adults in China and Taiwan | 2008 -2009 | Center on Aging, University of Utah (Pilot grant) | Principal Investigator |
| Conference grant – The U.S. and China: Parallel Challenges in Health Care | 2008 | Chang Ching-Kuo Foundation | Co-Director |
| Urban/Rural Disparities in Health and Mortality in China -AG02579 | 2007- 2009 | National Institutes of Health (NIA) | Principal Investigator |
| Gender Differences in Older Adult Health in Japan, Singapore and Beijing | 2007- 2008 | Faculty of Arts and Social Science, National University of Singapore | Consultant (Chan PI) |
| Impact of Migration on Older Rural Parents | 2007- 2008 | Thailand Research Fund – National Health Foundation | Consultant (Kespichav- awattana PI) |
| Exploring the Nexus of Family, Migration, Aging and Health | 2006 -2007 | Institute of Public and International Affairs – University of Utah | Co-Investigator (Korinek PI) |
| Examining the Well-Being of Elderly Cambodians and Their Families | 2005- 2006 | United Nations (UNFPA) | Principal Investigator |
| The Impact of AIDS, Poverty, and Social Upheaval on the Elderly: The Case of Cambodia | 2003- 2005 | National Institutes of Health (NIA) | Co-Principal Investigator |
| Comparative Study of Health Transitions in Later Life: China Supplement – AG20063 | 2002-2005 | National Institutes of Health (NIA) | Principal Investigator |
| Comparative Study of Health Transitions in Later Life -AG20063 | 2001- 2005 | National Institutes of Health (NIA) | Principal Investigator |
| SES and Physical Functioning Across Diverse Settings -AG17270 | 1999- 2001 | National Institutes of Healths (NIA) | Principal Investigator |
| International Training and Research Program in Population and Health | 1998 | Fogerty Foundation | Coordinator |
| Health and Aging in Taiwan: Sociological Explanations | 1998 | Graduate College of the University of Nevada-Las Vegas | Principal Investigator |
| Social Environment and Health Among Older Chinese | 1997- 1998 | National Institutes of Health (NIA) | Research Assistant (PI Hermalin) |
| Socioeconomic Differentials in Health | 1996- 1997 | University of Michigan Research Partnership Program | Co-Principal Investigator |
| Living With Arthritis | 1993- 1994 | Canadian Aging Research Network | Co-Principal Investigator |
