Riverside Primary Care Mercury West 2148 West Mercury Blvd. Hampton, VA 23666. Phone : 757-827-1940 Fax : 757-896-4715. Office Hours. Monday-Friday, 8 a.m.-5 p.m. Appointments Please call the office at (757) 827-1940 for an appointment or use MyChart. We are unable to accept walk-ins. Please provide 24 hours notice if you need to reschedule an ....