We are proud to announce that PhenoPath is now a Quest Diagnostics Company.

About PhenoPath

PhenoPath was founded in 1998 by Dr. Allen M. Gown, a pathologist-scientist who is one of the world’s leading experts in the diagnostic and research applications of immunohistochemistry. Dr. Gown is joined by a pathology team of nationally and internationally recognized leaders in diagnostic immunophenotyping, hematopathology and molecular pathology.

Since its inception, PhenoPath has been pathologist-driven. Our primary principle has never wavered: making correct diagnoses (“Diagnoses you can count on®”) through the best practice of pathology.

Dedication to excellence is in our DNA, and is reflected in every pathology report we issue. Our commitment is evident in the high level of training and expertise of our pathologists and staff, the publications of our pathologists in journals and books, and our pathologists’ participation as invited experts at national meetings. You can be assured that when you phone for information and need to speak with a pathologist, one will be available to consult with you.

Address 551 North 34th St, Suite 100, Seattle WA 98103
Medical Director Steve Kussick, MD
Type of Testing
Anatomic Pathology
Diagnostic Services
BioPharma Services
Company Type PLLC (Professional Limited Liability Company)
Ownership Pathologist-owned company
Medicare # GAB13851
Tax ID # 91-1862536
NPI # 1649375189
CLIA* # 50D0936414
CAP # 6884001
State Licenses:  
   California COS 00800090
   Maryland 937
   New York 7953
   Pennsylvania 36667
   Rhode Island LCO00675
   Washington MTSA.FS.00003261
* CLIA Certificate WA is a CLIA-exempt state


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