in Yakima Best Practices Medical Clinic. 5 South 14th Avenue Yakima, WA 98902-3101 Tel. (509) 426-2378 Fax (509) 426-2380. Hours: Monday - Friday: 8:00 am - 5:30 pm. New patients and walk-ins are accepted beginning at 9:00 am. Get Directions on Google Maps.