Liability Sharing and Staffing in AI-Assisted Online Medical Consultation

TL;DR

This paper models how liability sharing and staffing levels influence service quality and physician mode choice in AI-assisted online medical consultations, revealing optimal policies and welfare implications.

Contribution

It introduces an integrated queueing model linking liability sharing, staffing, and physician choices, providing insights for contract calibration and capacity planning in AI healthcare.

Findings

Liability sharing and staffing act as substitute safety mechanisms.

Optimal policies favor AI-assisted operation under high congestion or costs.

Welfare gaps widen with increased loss severity, indicating need for incentive alignment.

Abstract

Liability sharing and staffing jointly determine service quality in AI-assisted online medical consultation, yet their interaction is rarely examined in an integrated framework linking contracts to congestion via physician responses. This paper develops a Stackelberg queueing model where the platform selects a liability share and a staffing level while physicians choose between AI-assisted and independent diagnostic modes. Physician mode choice exhibits a threshold structure, with the critical liability share decreasing in loss severity and increasing in the effort cost of independent diagnosis. Optimal platform policy sets liability below this threshold to trade off risk transfer against compliance costs, revealing that liability sharing and staffing function as substitute safety mechanisms. Higher congestion or staffing costs tilt optimal policy toward AI-assisted operation, whereas elevated loss severity shifts the preferred regime toward independent diagnosis. The welfare gap between platform and social optima widens with loss severity, suggesting greater scope for incentive alignment in high-stakes settings. By endogenizing physician mode choice within a congested service system, this study clarifies how liability design propagates through queueing dynamics, offering guidance for calibrating contracts and capacity in AI-assisted medical consultation.