We are pleased to announce that a new agreement has been reached with Aetna. This allows Valley to continue to be an in-network provider for Aetna-insured patients and will cover services provided since previous contracts ended June 1, 2025. We understand how important it is for our patients to retain in-network access to the doctors, programs, and expert care teams they know and trust. Thank you for your patience throughout this process.
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Valley Medical Group Provider
Provider Bio
Sydney Cousin, MD, PhD has served at Valley Medicine Center as a hospitalist since 2011. He has a special interest critical care, infectious disease and comprehensive patient-centered corradiated care. Dr. Cousin has been named the Provider of the Quarter and twice the Provider of the Month since working at Valley Medical Center. He is excited about the practice of compassionate medicine and looks forward to caring for his patients like family.
Dr. Cousin received his medical degree from University of Washington School of Medicine & his doctoral degree from University of Washington Graduate School in Molecular and Cellular Biology. His combined residency in Internal Medicine & Pediatrics was completed at Eastern Carolina University in Greenville, North Carolina, and he is a board-certified internist by the American Board of Internal Medicine.
Dr. Cousin is originally from Maryland but has come to love and call the greater Seattle area home. His wife is also a graduate of University of Washington, and the couple enjoys traveling, hiking, backpacking, aviation, martial arts, and collecting art. They are animal lovers and have several pets and serve on the board of a local wildlife protection group.
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Scheduling & Locations
This provider works at the location(s) listed below. If you haven’t had an appointment with this provider before, please look near the provider’s photo above to make sure they are accepting new patients. Telehealth appointments are available for some conditions. Please call the clinic to learn more about telehealth options.
Insurance Information
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