Kaiser Permanente operates as an integrated health system, meaning its formulary is developed by Kaiser's own Pharmacy and Therapeutics Committee. This closed-system approach means Kaiser pharmacies stock and dispense formulary medications directly. Kaiser's formulary tends to be more selective than open-network plans, but its integration reduces prior authorization friction.

Key Facts

Kaiser uses its own pharmacies, so you must fill prescriptions at Kaiser facilities or through Kaiser mail order
The formulary uses 4 tiers: Generic, Preferred Brand, Non-Preferred Brand, and Specialty
Kaiser's P&T Committee reviews the formulary monthly and updates it more frequently than most insurers
Prior authorization is handled internally, often with faster turnaround than external PBMs
Kaiser is available in 8 states plus DC: CA, CO, GA, HI, MD, OR, VA, and WA
Many generic medications are available for $5 to $15 copays

Open Enrollment Reminder

ACA marketplace enrollment runs November 1 to January 15. Medicare Annual Enrollment is October 15 to December 7. Compare formularies for your medications before choosing a plan.

Can't Afford Your Medication?
Find Patient Assistance Programs
Search manufacturer PAPs and nonprofit programs on OmniRx
Compare Cash Prices
Find the Lowest Pharmacy Price
Compare prices at pharmacies near you on RxGrab

Check Your Specific Plan's Formulary

Coverage varies by plan. Use our formulary checker tool to look up your exact copay and restrictions.

Open Formulary Checker

Sources and standards behind this page

Drug coverage in the United States is governed by published rules rather than by any one insurer's summary, and the sources below are the primary ones. They are linked so a reader can check a claim without taking this page's word for it.

This page describes how coverage and formularies work. It is not medical advice, and a reader's own plan documents and prescriber decide what applies to them.

Frequently Asked Questions

Can I fill prescriptions outside of Kaiser pharmacies?

In most cases, you need to use Kaiser pharmacies for routine prescriptions. Exceptions include urgent/emergency situations and when traveling outside Kaiser's service area. Some Kaiser plans offer limited out-of-network pharmacy benefits. Mail-order delivery is available for maintenance medications.

How does Kaiser's formulary compare to other insurers?

Kaiser's formulary is generally more selective (fewer drugs listed) but tends to have lower copays for covered medications. Because Kaiser is an integrated system, prior authorization approvals are often faster, and your Kaiser doctor already knows what is on formulary when prescribing.

Does Kaiser cover specialty medications?

Yes, Kaiser covers specialty medications on Tier 4. These often require prior authorization and may have higher cost-sharing (typically 20% to 30% coinsurance). Kaiser's specialty pharmacy team coordinates care and can help with manufacturer assistance programs.

Related Resources

Get Formulary and Coverage Updates

Subscribe to receive alerts on formulary changes, new drug approvals, and insurance coverage updates.