Geoffrey J. Hoffman, PhD, MPH
University of Michigan School of Nursing
400 North Ingalls Building
Ann Arbor, MI 48109-5482
In the news
Jun 18, 2025: CNN "Older adults in the US are increasingly dying from unintentional falls"
Jun 2, 2025: University of Michigan Institute for Healthcare Policy & Innovation "What makes someone leave a Medicare Advantage plan?"
Oct 24, 2024: University of Michigan Institute for Healthcare Policy & Innovation "Medicare has a revolving door, study suggests"
Mar 20, 2024: University of Michigan Institute for Healthcare Policy & Innovation "In sickness and in health, older couples mostly make Medicare moves together"
Sep 2, 2020: Michigan News "Depression worsens over time for older caregivers of newly diagnosed dementia patients"
Aug 19, 2020: Michigan News "Balancing act: falls often early signal of underlying health problems"
Jul 9, 2020: Stateside "For older adults, social distancing brings its own mental and physical health risks."
Interests
- Medicare Advantage
- Alzheimer's disease
- Injury/safety
- Health policy
- Caregiving
Dr. Hoffman is a health services researcher and gerontologist. His research focuses on quality of care and Medicare policies affecting utilization and injury for older adults. Specific topics of interest include how Medicare reimbursements and insurance arrangements (Traditional Medicare and Medicare Advantage) influence older individuals' long-term functioning, safety, and care patterns.
Dr. Hoffman's work has been published in leading health services and gerontological journals such as Health Affairs, JAMA Network Open, the Journal of General Internal Medicine, Journal of the American Geriatrics Society, Journal of Aging and Health, Medical Care, Health Services Research, and The Gerontologist.
Current Research Grants and Programs
- The impact of Medicare managed care on older patients with dementia and their family caregivers (NIA R01AG074944; PI)
- The effects of bundled payment on acute cardiovascular outcomes among older adults (NIA R01AG047932; Co-I)
- Effects of the COVID-19 Pandemic on Long-Term Care for High-Need Older Adults with and without Alzheimer's Disease and Related Dementias (NIA R01AG0805801; Co-I)
- Resilience to Covid-19 Disrupted Chronic Condition Care for Older Veterans At Risk of Hospitalization: Role of VA Ambulatory Care and VA Extended Care Home and Community-Based Care Supports (VA I01 HX003584)
Teaching
Dr. Hoffman teaches the nursing Ph.D. course on research methodology (HS852), which covers conceptual models and statistical models for health services research. He has frequently guest lectured on U.S. health care policy and financing and conduct of observational research using secondary data.
Affiliations / Service
- Member, AcademyHealth, 2010-present
- Member, American Public Health Association, 2010-present
Notable Awards / Honors
- HSR Best of AcademyHealth for abstract, "Impact of Medicare Eligibility on Informal Caregiving for Surgery and Stroke," 2021
- HSR Best of AcademyHealth for abstract, "Are Improvements Still Needed to the Modified Hospital Readmissions Reduction Program: a Health and Retirement Study (2000-14)?", 2020
- James G. Zimmer New Investigator Award from the Aging & Health Section of the American Public Health Association, 2017
Education
- Post-doc, University of Michigan School of Nursing, 2017
- Ph.D., UCLA Fielding School of Public Health, 2015
- MPH, UCLA Fielding School of Public Health, 2008
- BA, Harvard University, Cambridge, MA 1994
Publication Highlights
Hoffman, G.J., Lei, L., Alam, I., Kim, M., Min, L., Fan, Z., & Levine, D. (2025). Medicare Advantage Plan Disenrollment: Beneficiaries cite access, cost, and quality among reasons for leaving. Health Affairs, 44(6), 684-692. doi:10.1377/hlthaff.2024.01536
Hoffman, G.J., Jiao, Y.A., Fan, Z., Kim, H.M., Min, L., & Maust, D. (2024). Should I stay or should I go again: Multiple switching between fee-for-service Medicare and Medicare advantage among older beneficiaries. Health Services Research, 60(Suppl. 2), e14398. doi:10.1111/1475-6773.14398.
Hoffman, G.J. & Fendrick, A.M. (2025). The consequences of the Kennedy v. Braidwood Supreme Court ruling on fall prevention. Journal of the American Geriatrics Society. doi:10.1111/jgs.19576.
Hoffman, G.J., Ha, J., Fan, Z., & Li, J. (2025). Associations between rural hospital closures and acute and post-acute care access and outcomes. Health Services Research, 60(3), e14426. doi: 10.1111/1475-6773.14426.
Hoffman, G.J., Ha, J., & Li, J. (2024). Association of Medicare home health ratings with older adult fall injuries: An instrumental variables analysis. Journal of the American Medical Directors Association, 25(7), 105013. doi: 10.1016/j.jamda.2024.03.123.
Lei, L., Levy. H., Ankuda, C., Hoffman, G.J., Kim, M., Strominger, J., & Maust, D. (2024). Partner plan choices and Medicare Advantage enrollment decisions among older adults. JAMA, 331(15), 1322-1325. doi: 10.1001/jama.2024.1773.
Hoffman, G.J., Alexander, N.B., Ha, J., Nguyen, T., & Min, L.C. (2023). Medicare’s hospital readmission reduction program reduced fall-related health care use: An unexpected benefit? Health Services Research, 59(1), e14246. doi: 10.1111/1475-6773.14246.
