IHA Hospital Medicine at St. Joseph Mercy Ann Arbor. Open 24 Hours Open 24 Hours Open 24 Hours Open 24 Hours Open 24 Hours Open 24 Hours Open 24 Hours. MyChart Patient Portal COVID-19 Updates. Address. 5301 E. Huron River Dr. Ypsilanti, MI 48197. US. Get Directions. ... IHA Pediatric Hospital Medicine at St. Joseph Mercy Ann Arbor; Additional ....