# Costco Pharmacy fax numbers for records and mail-order enquiries

Find Costco’s health information release fax and the separate Mail Order Pharmacy customer-service fax.

Country: United States
Category: Healthcare
Last reviewed: 2026-10-04 (published sources, not a test transmission)

## Which Costco Pharmacy fax number should I use?

For a release of protected health information, use the Privacy Office route and its authorization form. The Mail Order Pharmacy customer-service line serves a different purpose. A patient should not assume either is an authorized route for submitting a new prescription.

## Costco Health Centers Privacy Office: Authorization for Release of PHI

Fax: +1 425 313 2822
E.164: +14253132822

Return the completed authorization required for this account or service.

Use only when: Use the signed authorization and select the relevant Costco Pharmacy, Optical or Hearing Aid Center; include proof of representative authority when applicable.

[Costco Pharmacy — records request instructions](https://www.costco.com/wcsstore/CostcoUSBCCatalogAssetStore/rx/rx-PHIDiscAuthENG.pdf) — reviewed 2026-10-04

## Costco Mail Order Pharmacy: customer service

Fax: +1 800 633 0334
E.164: +18006330334

Toll-free number; service and international charges may still apply.

Order or account documents requested by the mail-order pharmacy.

Use only when: Mail-order pharmacy customer service. Confirm the form and submission requirements before sending; this is not the Health Centers Privacy Office.

[Costco Pharmacy — records request instructions](https://www.costco.com/wcsstore/CostcoUSBCCatalogAssetStore/rx/WebPatientBrochure.pdf) — reviewed 2026-10-04

## What to include in your fax to Costco Pharmacy

Submit the signed disclosure authorization for records access. Send mail-order account or order correspondence only as the pharmacy requests, using its current ordering instructions.

## Check the destination and prepare your cover page

Name the receiving department and the hospital, clinic or service involved. Add the document title, page count and a callback number. Put patient identifiers and authorization details in the fields the official form requests; a cover page does not replace signed consent.

Check the official source and recipient instructions before sending. A reviewed source confirms a published number, not live availability.

## Confirm delivery and follow up with Costco Pharmacy

These are fax destinations, not voice support lines. Keep the transmission result and a copy of the documents. Confirm with the receiving department that the packet is complete and can be processed; a delivery receipt does not establish acceptance or a decision. Check with that department before sending a duplicate.

## How to fax Costco Pharmacy without a fax machine

Prepare a legible PDF, verify the department and number, review the pages and authorize sending. DearFax supports [online sending](https://dearfax.com/send-fax-online) and workflows with [ChatGPT](https://dearfax.com/chatgpt) or [Codex](https://dearfax.com/codex) through [MCP](https://dearfax.com/mcp). Retain the transmission result.

Healthcare organizations should confirm their compliance requirements before selecting a fax service. DearFax does not currently offer HIPAA compliance.

## Frequently asked questions

### What Costco Pharmacy fax number should I use?

Costco Health Centers Privacy Office: Authorization for Release of PHI: +1 425 313 2822. Costco Mail Order Pharmacy: customer service: +1 800 633 0334. For a release of protected health information, use the Privacy Office route and its authorization form. The Mail Order Pharmacy customer-service line serves a different purpose. A patient should not assume either is an authorized route for submitting a new prescription.

### Can a patient fax a prescription to Costco’s records fax?

The Privacy Office fax is for a disclosure authorization. Ask the dispensing pharmacy how the prescriber must submit a prescription; a records-release form does not establish that route.

### What documents can I fax to Costco Pharmacy?

Submit the signed disclosure authorization for records access. Send mail-order account or order correspondence only as the pharmacy requests, using its current ordering instructions.

### What should I put on a fax cover page for Costco Pharmacy?

Name the receiving department and the hospital, clinic or service involved. Add the document title, page count and a callback number. Put patient identifiers and authorization details in the fields the official form requests; a cover page does not replace signed consent.

### How can I fax Costco Pharmacy without a fax machine?

Prepare your documents as a legible PDF and confirm the recipient’s submission requirements. You can use DearFax in your browser or prepare the fax with ChatGPT or Codex through MCP. Review the number and pages before authorizing the send, then keep the transmission result. Healthcare organizations should check their compliance requirements; DearFax does not currently offer HIPAA compliance.

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