Creates a time‑limited exception to the physician self‑referral law so physician practices can furnish certain Medicare Part D outpatient prescription drugs to their own patients, but only from January 1, 2026 through December 31, 2030 and only if strict safeguards are met. These safeguards cover who prescribes, an ongoing patient relationship, a recent in‑person visit, where and how the drug is dispensed, and who bills. Part D plan rules (like networks, formularies, cost‑sharing, and prior authorization) stay the same.

It also orders an independent study by the Comptroller General to look at pharmacies or pharmacy networks that see big increases in Part D dispensing after enactment and to analyze factors that might influence prescribing, with a report due within three years. Finally, it reduces the Medicare Improvement Fund by $18 million.