Visit the patient portal to request a date for your next appointment. Visit Patient Portal. Evergreen Family Health. 28 Park Ave Williston VT 05495. Tel: 802-878-1008. Fax: 802-872-2679. Hours: Mon-Thurs. 8:00 am - 5:00 pm Friday. 8:00 am - 5:00 pm Saturday. 9:00 am - 1:00 pm ....