Addressing Medical Affordability Without Compromising Care
LDI Expert: Standardize, Digitize Billing to Cut Administrative Costs
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.
Why Pediatric Hospitals are Paying More Attention to Caregiver Hunger
Caregivers Must Often Go Without Food as They Accompany Child Patients
Holly Fernandez Lynch Wins National Bioethics Research Award
Cited for Achievements in Bridging Divides Through Bioethics
No Dual Track for Nurses Hurts Patients, Penn LDI Expert Says
Nurse-Scientist Pathways Would Speed Evidence Into Practice, Says Nursing’s Kathryn Connell
Why White Men in the U.S. Face Surprising Health Challenges
White Men’s Social Advantages May Fuel Suicide and Poor Health, LDI Expert Says
Despite Coverage Requirements, Insurers Added Barriers to Access for Drugs
Chart of the Day: Medicare, Medicaid, and Insurers Replaced High Costs With More Hurdles, LDI Expert Finds
Upcoming Events
In-Person Event
2026 SUMR Research Symposium
Penn LDI Summer Undergraduate Mentored Research Program
Virtual Event
Consumer-Directed Health Care: Promise or Pitfall
A Conversation with Sherry Glied, PhD, and Stephen Parente, PhD, MPH, moderated by David Grande, MD, MPA
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.
Ashlee Murray, MD, MPH
- Associate Professor, Clinical Pediatrics , Perelman School of Medicine
Hojjat Salmasian, MD, PhD
- Vice President and Chief Data and Analytics Officer , Children’s Hospital of Philadelphia
- Associate Professor, Pediatrics , Perelman School of Medicine
Elise Parrish
- PhD Student, Sociology , School of Arts and Sciences
Polina Krass, MD, MSHP
- Instructor, Pediatric Emergency Medicine , Perelman School of Medicine
Siva Mathiyazhagan, PhD, MSW
- Research Assistant Professor , School of Social Policy & Practice
Elizabeth (Betsy) Salazar, MD, MSHP
- Assistant Professor, Neonatology , Children’s Hospital of Philadelphia
Justinna Dixon, PhD, RN
- Postdoctoral Fellow, National Clinician Scholars Program , Penn Nursing
Julia Tchou, MD, PhD
- Professor, Clinical Surgery , Perelman School of Medicine
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
$179M+
Awarded in External Grant Funding
12,100+
Journal Articles Published (2021–2025)
$622K+
Awarded in Research Grants from LDI