Dr. Chris Callahan has 25 years of experience in studying clinical interventions and new models of care designed to improve outcomes for older adults. His work began with a focus on late-life depression and dementia and developed into research on multi-morbidity and fragmentation of care.

He has focused particularly on vulnerable elders who are typically low-income, minority, disabled, and dual-eligible.

Christopher Callahan, MD, is a geriatric medicine physician researcher with more than 30 years of experience in conducting research to improve the care of older adults.

Clinical Interests:

  • Alzheimer's disease and related dementias
  • Late Life Depression.

Dr. Callahan’s research experience also includes the use of large clinical and survey research databases (including the Health and Retirement Study), as well as Medicare and Medicaid claims data, to conduct clinical epidemiologic studies.

Dr. Callahan's major research interest is improving the care of older adults with late life depression, dementia, and related conditions. His studies seek ways to enable primary care physicians to deliver excellent care to older adults.

Subject Area:

  • Medicine.
Past Affiliations
Internal Medicine
MD, Saint Louis University, Medicine, 1985
BA, University of Missouri-Columbia, Biology, 1981
depression mental disorders dementia health services delivery nursing homes mental health services geriatrics & gerontology internal medicine
American College of Physicians
American Geriatrics Society
Society of General Internal Medicine