To obtain an aggregate number of Managed Health Services (MHS) grievances, appeals and exceptions, please call Member Services at: 1-866-475-3129 (TTY 1-877-613-2076) from 8:00 a.m. to 8:00 p.m., seven days a week. Advantage by Managed Health Services HMO SNP (Advantage by MHS) 2010 Medicare Star Ratings To compare other plan ratings, find detailed reports on the findings, or to get the most recent rating information for MHS go to:www.medicare.gov (Please note: By clicking on this link you will be leaving the Advantage by MHS (HMO) website.)