Physician Payment and Incentives

Core Idea

Physician payment methods create incentives that powerfully shape clinical behavior. Fee-for-service (FFS) pays per service delivered, incentivizing volume (more visits, more procedures, more tests). Capitation pays a fixed amount per enrolled patient per period, incentivizing efficiency but also potential underservice. Salary eliminates volume incentives but may reduce productivity. Supplier-induced demand — the physician's ability to generate demand for their own services by exploiting the information asymmetry with patients — is a uniquely important phenomenon in health economics, because the physician is simultaneously the patient's agent (advisor) and the supplier (provider). Pay-for-performance (P4P) attempts to align incentives with quality by tying payment to measurable outcomes or process measures, though evidence for its effectiveness is mixed.

Explainer

The physician is the central decision-maker in healthcare — they decide what tests to order, what medications to prescribe, whether to recommend surgery, and when to refer to a specialist. Patients delegate these decisions because they lack the expertise to make them independently. This agency relationship means that physician payment methods have outsized effects on healthcare utilization, cost, and quality — far more than in industries where the consumer makes independent purchasing decisions.

Fee-for-service is the most common payment method globally and the simplest: do more, earn more. A physician paid per visit has an incentive to schedule more visits. A surgeon paid per procedure has an incentive to recommend surgery over watchful waiting. This volume incentive has been identified as a major driver of healthcare cost growth, particularly in the US, where FFS dominates and physician incomes are among the highest in the world. The phenomenon of supplier-induced demand — where physicians generate demand for their own services by leveraging information asymmetry — is most acute under FFS. The evidence is compelling: when fee schedules are cut, physicians increase volume; regions with more physicians have more per-capita utilization without better outcomes.

Capitation inverts the incentive. A physician paid $100 per month per enrolled patient earns the same whether the patient visits zero times or ten times. The marginal service is now a cost, not a revenue source. This creates efficiency: capitated physicians order fewer tests, make fewer referrals, and emphasize prevention. But it also creates the risk of underservice — withholding beneficial care to save costs — and cream-skimming — attracting healthy patients and avoiding sick ones. The HMO backlash of the 1990s was driven partly by patient perception (often justified) that capitated physicians were denying necessary care.

Modern payment reform recognizes that no single method perfectly aligns physician incentives with patient welfare. Blended models combine a capitated base (for efficiency) with FFS components for preventive services and quality bonuses (for access and quality). Accountable Care Organizations give physician groups shared savings when they reduce total spending below a benchmark while maintaining quality. Bundled payments cover an entire episode of care (e.g., hip replacement from surgery through rehabilitation) at a fixed price, incentivizing coordination across providers. Each of these represents an attempt to balance the fundamental tension between paying for volume (FFS) and paying for value (outcomes-based payment).