Trump Order to Criminalize Homelessness Sparks Alarm
New Policy Reduces Housing First While Favoring Enforcement and Involuntary Treatment. That Could Worsen Homelessness, LDI Experts Warn
Our Mission
We connect researchers from across the University of Pennsylvania with a common mission: to improve health and health care by catalyzing collaborative, multidisciplinary research that influences policy and practice.
Featured Research Updates
LDI generates critical evidence to improve U.S. health care delivery, patient care, and health policy.
Debate Continues Over H.R. 1 Medicaid Changes as Millions Risk Losing Coverage
Will Implementation Create Sweeping Losses or a Return to Balance and Self-Sufficiency?
Three Penn LDI Senior Fellow Win 2026 SGIM Awards
Rachel Werner, Eric Roberts, Joseph Nwadiuko Cited for Their Health Services Research Work
In Philly Emergency Departments, Text Messages Helped Patients Seek Public Benefits More Often
Follow-Up Texts, Not Paper Flyers, Drove Real Action on Unclaimed Benefits Like Heating, Child Care, Tax Rebates, and Children’s Health
Penn LDI Lecture Highlights Persistent Gaps in Knee Replacement Care
Decades of Research Show Minority Patients Less Likely to Receive Surgery, Even When Equally Indicated
Penn Study Faults Federal Maternal Morbidity Statistics
Comparison to Commercial All-Payer Database Documents Wide Discrepancies
Impact Report
Our commitment to driving positive change through transformative research powered a series of standout achievements in 2025. Explore how we turned evidence into action to shape smarter health policy.
Upcoming Events
In-Person Event
LDI Fellow Workshop: How You Can Improve Your Media Presence as a Health Policy Researcher
Open to LDI Fellows only
Our Experts
Our 500+ Fellows are national experts and thought leaders who bridge all of Penn’s schools, the University of Pennsylvania Health System, and the Children’s Hospital of Philadelphia.
Li Shen, PhD
- Professor, Biostatistics, Epidemiology and Informatics , Perelman School of Medicine
Eric T. Roberts, PhD
- Associate Professor, General Internal Medicine , Perelman School of Medicine
Shelby Davies, MD
- Assistant Professor, Clinical Pediatrics , Perelman School of Medicine
Taras Grosh, MD
- Assistant Professor, Anesthesiology and Critical Care , Perelman School of Medicine
Beth Pineles, MD, PhD
- Assistant Professor, Obstetrics and Gynecology , Perelman School of Medicine
Katharine Rendle, PhD, MPH
- Associate Professor, Family Medicine and Community Health , Perelman School of Medicine
- Associate Professor, Epidemiology , Perelman School of Medicine
Adda Grimberg, MD
- Professor, Pediatrics , Perelman School of Medicine
- Scientific Director, Diagnostic and Research Growth Center , Children’s Hospital of Philadelphia
Heather Burris, MD, MPH
- Associate Professor, Pediatrics , Perelman School of Medicine
- Associate Professor, Neonatology , Children’s Hospital of Philadelphia
What We Do
As Penn’s hub for health care delivery, health policy, and population health, we connect and amplify over 500 Fellows across the University, and train the next generation of researchers.
Fast Facts
$160M+
Awarded in External Grant Funding
11,300+
Journal Articles Published (2020–2024)
$400K+
Awarded in Research Grants from LDI