Four axes from current statute and agency guidance. Teal bar = substitution/assistance/access in place; amber = permissive or absent.
| Generic substitution mandate | Permissive |
| State Pharmaceutical Assistance Program | No broad SPAP |
| 90-day fills permitted | Allowed |
| PMP mandatory prescriber query | Voluntary |
Oregon permits but does not mandate generic substitution. Under ORS § 689.515, a pharmacist may substitute a less expensive therapeutically equivalent drug product unless the prescriber has indicated "dispense as written." The substitute must be FDA AB-rated.
The Oregon Health Authority administers Oregon Health Plan (Medicaid) pharmacy benefits and maintains the OHP Preferred Drug List. Most members are enrolled in Coordinated Care Organizations (CCOs) which follow the unified PDL. Non-preferred drugs require prior authorization initiated by the prescriber.
Preferred Drug List: View current PDL
Prior authorization contact: Oregon Health Plan Pharmacy: 1-888-202-2126
Oregon does not operate a Medicare-recognized SPAP. Low-income Oregonians use Medicare Part D Extra Help (LIS), Oregon Health Plan (Medicaid) if eligible, manufacturer Patient Assistance Programs, and SHIBA (Senior Health Insurance Benefits Assistance) for Medicare enrollment counseling.
Eligibility: No state SPAP. SHIBA helps with Medicare enrollment.
Oregon permits 90-day fills of non-controlled chronic medications. Out-of-state pharmacies must hold an Oregon Nonresident Pharmacy registration. Oregon pharmacists may prescribe and dispense hormonal contraception and HIV PrEP under collaborative practice agreements. Federal CSA refill limits apply to controlled substances.
Oregon operates a Prescription Drug Monitoring Program administered by the Oregon Health Authority. Prescriber query is encouraged but not universally mandated by statute. Dispensers must report Schedule II-IV dispensing within seven days.
PMP portal: Oregon Prescription Drug Monitoring Program (PDMP)
Oregon hosts a substantial 340B network including OHSU, Providence Oregon, Legacy Health, FQHCs across Portland/Eugene/rural counties, and Ryan White clinics.
Find a 340B clinic in Oregon: HRSA OPAIS database (OR filter)
Our sister site OmniRx maintains a federal-side patient assistance program directory covering manufacturer PAPs, foundation copay assistance, GoodRx-style discount cards, and 340B locators applicable nationwide.
Once the law side is clear, the next question is which pharmacy actually has the cheapest fill. Use the RxGrab Pharmacy Finder to compare CostPlus Drugs, Costco, Walmart, Amazon Pharmacy, and other discount pharmacies on your specific medication, and read our generic vs brand explainer for the bioequivalence rules behind every substitution.
Yes unless your prescriber wrote "dispense as written." Under ORS § 689.515 substitution is permissive.
No. Use federal Extra Help, Oregon Health Plan if eligible, manufacturer Patient Assistance Programs. SHIBA helps with Medicare Part D enrollment.
Yes. Oregon pharmacists may prescribe hormonal contraception and HIV PrEP under collaborative practice agreements without a separate physician visit.
CCOs are Oregon's Medicaid managed-care entities. They coordinate physical, behavioral, and oral health services. All CCOs use the unified OHP PDL.