FaxTerra
Reference·Reviewed August 2026

Costco Pharmacy Fax Numbers

Costco publishes one fax line for releasing your pharmacy records and a separate one for the mail order pharmacy. Pick the one that matches what you are sending, then send free from your phone.

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Costco Health Centers Privacy Office — Authorization for Release of PHI
Covers Costco Pharmacy, Costco Optical, and Costco Hearing Aid Center records. Mail alternative: Costco Wholesale Corporation, Attn: Privacy Office, 999 Lake Drive, Issaquah, WA 98027.
+1 (425) 313-2822
Costco Mail Order Pharmacy — customer service
Toll-free
For questions, forms, and insurance information on a mail order account. Mailing address: 802 134th St. SW, Suite 140, Everett, WA 98204-9935.
+1 (800) 633-0334

Records and mail order are two different destinations

Costco calls its pharmacies, optical centers, and hearing aid centers the Costco Health Centers, and one privacy office covers all three. A signed Authorization for Release of Protected Health Information goes there, at (425) 313-2822, whether the records are prescription history from the warehouse pharmacy counter, an eye exam, or a hearing test.

Costco Mail Order Pharmacy is a separate operation in Everett, Washington, with its own customer service line at (800) 633-0334. That is where a question about a mail order account, an insurance card, or a form Costco asked you to return belongs.

Sending a records authorization to the mail order line does not bounce. It sits with a customer service team that cannot act on it.

Costco Mail Order will not fill a prescription you fax

Costco’s own ordering instructions ask for the original written prescription by mail, not by fax, and say the pharmacy does not hold prescriptions for later. Refills go by phone through the automated system, by mail using the refill order form that arrives with each shipment, or online.

If you need medication immediately, Costco’s instruction is to ask your prescriber for two prescriptions: a short-term supply your local warehouse pharmacy can fill today, and a 90-day supply with refills to send to mail order. Once a mail order has been processed it cannot be stopped, and Costco does not accept returns on prescriptions.

What you can fax to the mail order line is everything around the prescription: your patient profile form, an updated insurance card, or a response to something Costco sent you.

Verify the number before you send

A release authorization identifies you and names the records being disclosed. Confirm the destination first:

  • Download the authorization form from costco.com and read the fax number printed at the bottom of the form you actually downloaded. It is on the form itself, under the Privacy Office block.
  • Check the box for the right health center. The same form covers pharmacy, optical, and hearing aid records, and the box you tick decides which one is searched.
  • Recent prescription history is available in your Costco pharmacy account online, with no form to sign and nothing to send.
  • If you are making a request for someone else, Costco requires evidence of your personal representative status with the form. A request without it is not processed.

How to fax Costco Pharmacy without a fax machine

Create a free FaxTerra account with an email address, upload the signed authorization as a PDF or as photos taken with your phone, enter the Costco fax number that matches what you are sending, and send. Delivery confirmation arrives by email.

A signed authorization is one or two pages, which sends free within your monthly free pages. See how to send a fax for accepted files and page limits, faxing medical records for the wider process, and the Walgreens guide or the CVS guide if you are pulling prescription history from more than one pharmacy chain.

FAQ

Frequently Asked Questions

What is the Costco Pharmacy fax number for prescription records?

Costco prints (425) 313-2822 on its Costco Health Centers Authorization for Release of Protected Health Information, alongside the Privacy Office address at 999 Lake Drive, Issaquah, WA 98027. That one form and fax covers pharmacy, optical, and hearing aid center records.

Can I fax a prescription to Costco Mail Order Pharmacy?

No. Costco’s ordering instructions ask you to mail the original written prescription with your completed patient profile form. Refills go by phone, by mail using the refill order form in your shipment, or online. The mail order fax line is for customer service, not for new prescriptions.

How do I get my Costco prescription history for taxes?

Your Costco pharmacy account online shows prescription history you can print. For a period the account does not cover, use the Costco Health Centers authorization form, tick the pharmacy box, and specify the dates you need.

Do I need a Costco membership to use the pharmacy?

Costco’s pharmacies serve non-members in states where that is required by law, and its published forms and privacy notice apply the same way either way. Membership questions belong with Costco directly rather than with a fax service.

Is FaxTerra affiliated with Costco?

No. FaxTerra is an independent online fax service. We deliver your document to the number you enter and confirm when it arrives. We are not affiliated with Costco Wholesale and cannot look up your prescriptions.

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