The new 2025-2026 LDI CICADA Scientists are Sherif Adewale Olanrewaju, PhD, RN; Leah V. Estrada, PhD, RN; and Christopher Chesley, MD, MSCE.

The University of Pennsylvania’s Center for Improving Care Delivery for the Aging (CICADA) has announced three new postdoctoral and junior faculty members who are the program’s eighth cohort of CICADA Scholars pursuing pilot research and receiving training and mentorship in health services research (HSR).

Established on the Penn campus within the Leonard Davis Institute of Health Economics (LDI) eight years ago, CICADA was initially funded by a five-year grant from the National Institute on Aging (NIA).

The three new grantees for the 2025-2026 CICADA cohort are:

Sherif Adewale Olanrewaju, PhD, RN, Postdoctoral Fellow at the Penn School of Nursing’s Center for Health Outcomes and Policy Research (CHOPR). His CICADA pilot project is “The Association of Serious Mental Illness and Nursing Resources with Hospital Readmission Disparities Among Older Adults Hospitalized for Stroke.”

Leah V. Estrada, PhD, RN, an Assistant Professor in the Brookdale Department of Geriatrics and Palliative Medicine at the Icahn School of Medicine at Mount Sinai in New York City. Her CICADA pilot project is “The Health Economic Impact of Limited English Proficiency for Persons with Dementia.”

Christopher Chesley, MD, MSCE, Assistant Professor of Medicine in the Division of Pulmonary and Critical Care at the Perelman School of Medicine and a core faculty member at the Palliative and Advanced Illness Research Center (PAIR). His CICADA pilot project is “Characterizing Socio-Structural Determinants of Sepsis and Acute Respiratory Failure Outcomes Among Older Adults: Pre-Hospital Care, Access, and Delivery.”

Penn’s CICADA program focuses on the discipline of health services research and the study of how health care delivery is organized, financed, managed, quality-controlled, and regulated. The essential goal is to recruit, mentor, and develop junior faculty members into accomplished research scientists, a process that begins with pilot research projects undertaken with their mentors.

By training researchers in the priority areas of social, behavioral, and economic research on aging, CICADA aims to increase the number of researchers focused on the health and well-being of older adults.


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