Billing Questions: (800) 403-6749 or (509) 892-2701, Monday through Friday, 9 AM to 4 PM PST. Incyte Diagnostics is a private company founded in 1957 by pathologists to provide anatomic pathology services in the Pacific Northwest. We have facilities located in Bellevue, Spokane Valley, Walla Walla and Yakima. Anatomic pathology is the science of disease diagnosis based on the appearance and results of tissue or cell testing. As a leader in the anatomic pathology field, it is important at Incyte Diagnostics to combine expert interpretation with the latest technology to deliver the best results for clinicians and their patients. The most current technology and testing available has been implemented to enhance result accuracy, create efficiencies and detect diseases earlier.