Dr. Douglas David Mcmillen is a Internal Medicine and General Physicia…read moren in Cascade, Seattle, SEATTLE and has an experience of 24 years in these fields. Dr. Douglas David Mcmillen practices at Community Health Center of Snohomish County - Edmonds Walk-In Clinic in Cascade, Seattle, SEATTLE,Community Health Center of Snohomish County - Edmonds Clinic in Cascade, Seattle, SEATTLE and Carilion Clinic in Roanoke 24014, Roanoke VA.read less