This bill prohibits a health insurance carrier, or a pharmacy benefits manager under contract with a carrier, from engaging in certain discriminatory practices against an entity authorized to participate in the federal 340B drug pricing program or a pharmacy provider under contract with an entity authorized to participate in the federal 340B drug pricing program. The federal 340B drug pricing program within the United States Department of Health and Human Services, Health Resources and Services Administration allows eligible entities to purchase discounted prescription drugs. The bill also prohibits a health insurance carrier, or a pharmacy benefits manager under contract with a carrier, from reimbursing a pharmacy provider for a prescription drug or pharmacy service in an amount that is less than the national average drug acquisition cost at the time the drug is administered or dispensed. The bill also specifies that the reimbursement amount may not be less than the amount the pharmacy benefits manager reimburses itself or an affiliate for the same prescription drug or pharmacy service.