As a TA, you get the graduate-student insurance automatically. You should have received a guide to the plan. If not, request one from Frankye. A list of benefits can be found on the UW graduate appointee insurance plan page: http://www.grad.washington.edu/Insurance/news1999.htm.
Most treatment at Hall Health Center is free. Before you see an outside doctor, dentist, or optometrist, be sure to obtain a list of preferred care providers. Feel free to ask other students if you have any questions about our coverage.