Member information centers. Our member information centers are currently open for in-person assistance by appointment only. Call 800.942.0954 (TTY 711) to schedule an appointment and press 0 to speak with an operator. 1257 East Beltline Ave. NE, Grand Rapids. 250 East 8th Street, Holland. Hours are Mon. - Fri. 8:30 a.m. to 5 p.m..