To reach our Patient Portal Help Desk, call 314.851.1118 or toll-free at 855.287.ESSE (3773), Monday-Friday: 8am to 5pm. If you call after hours, your message will be returned the next business day. Locations Tesson Ferry Pediatrics 13303 Tesson Ferry Rd., Suite 150 St. Louis, MO 63128 314-842-5239 St. Charles Complete Care.