My research program is focused psoriatic arthritis (PsA), an inflammatory arthritis that affects up to 30% of patients with psoriasis. The mission of my research program is to improve outcomes in PsA by accelerating diagnosis, increasing the focus on meaningful, patient-centered outcomes, and developing and advancing methods for precision medicine. I am an expert in the care of patients with PsA and Director of the Penn Psoriatic Arthritis and Spondyloarthritis Program. My areas of expertise include epidemiology and pharmacoepidemiology, biostatistical methods for observational studies (e.g., complex time to event modeling, prediction modeling), outcome measures (e.g., qualitative and quantitative/psychometric assessment), clinical trial design and more general qualitative methods (e.g., survey, focus group and interview studies).