Skip to main content

Upcoming holiday closures 

Quest Patient Service Centers will be closed on Friday, July 3 and Saturday, July 4, 2026, in observance of Independence Day, and to give our frontline team the time to recharge. Don't let the holiday interrupt your care. Plan your visit today.

Hide
Quest Diagnostics

Seattle, WA licensure

Phenopath Laboratories
1737 Airport Way South, Ste 201
Seattle, WA 98134

LicensesExpiresLicense/Permit #
CAP
03-11-286884001
California09-23-26CDS00800090
MarylandNon-Expiring937
New York06-30-267953
Pennsylvania08-15-2636667
Rhode Island12-30-26LCO00675
Washington06-30-27MTSA.FS.000036414

The state license for laboratories within Washington are in lieu of a CLIA certificate.

 

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.