Abstract
Digital platforms reduce geographic frictions, enabling better matching between service providers and users. I quantify reallocation gains in Swedish online health care, using nationwide time-conditional random assignment between patients and physicians. Matching high-risk patients with doctors effective at reducing Emergency Room visits lowers such visits by 4.4 percent (SE 1.3); reallocations also reduce Counter-Guideline antibiotics by 3.1 percent (1.4). I find limited trade-offs in matching; horizontal differentiation among doctors and varied patient needs allow improvement in multiple outcomes simultaneously. Efficiency-enhancing reallocations also affect equity. The findings highlight the potential for care reorganization aligning provider heterogeneity with patient needs when geographic constraints are lifted. (JEL C78, H51, I11, I13, I14, I18)