Three Baltimore-area hospitals are among the best 455 hospitals in the country, receiving a five-star designation from the Centers for Medicare and Medicaid Services.Mercy Medical Center, the University of Maryland St. Joseph Medical Center and Howard County General Hospital received an overall five-star rating.The Overall Hospital Quality Star rating (overall star rating) summarizes a variety of measures across five areas of quality into a single star rating for each hospital. Scores are based on five measure groups, including mortality, safety of care, readmission, patient experience and timely and effective care.Five-star Maryland hospitalsHoward County General Hospital, ColumbiaMercy Medical Center, BaltimoreUniversity of Maryland St. Joseph Medical Center, TowsonFour-star Maryland hospitalsAnne Arundel Medical Center, AnnapolisAtlantic General Hospital, BerlinCalvertHealth Medical Center, Prince FrederickGarrett County Memorial Hospital, OaklandJohns Hopkins Hospital, BaltimoreMedStar St. Mary's Hospital, LeonardtownMedStar Union Memorial Hospital, BaltimorePeninsula Regional Medical Center, SalisburySuburban Hospital, BethesdaThree-star Maryland hospitalsAdventist Healthcare Shady Grove Medical Center, RockvilleAdventist Healthcare White Oak Medical Center, Silver SpringFrederick Health Hospital, FrederickGreater Baltimore Medical Center, TowsonHoly Cross Germantown Hospital, GermantownJohns Hopkins Bayview Medical Center, BaltimoreMedStar Good Samaritan Hospital, BaltimoreMedStar Montgomery Medical Center, OlneyMeritus Medical Center, HagerstownNorthwest Hospital Center, RandallstownUniversity of Maryland Medical Center Midtown Campus, BaltimoreUniversity of Maryland Shore Medical Center at Easton, EastonUniversity of Maryland Shore Medical Center at Chestertown, ChestertownTwo-star Maryland hospitalsAdventist Healthcare Fort Washington Medical Center, Fort WashingtonCarroll Hospital Center, WestminsterDoctors' Community Hospital, LanhamGrace Medical Center, BaltimoreHoly Cross Hospital, Silver SpringMedStar Franklin Square Medical Center, RossvilleMedStar Harbor Hospital, BaltimoreMedStar Southern Maryland Hospital Center, ClintonSt. Agnes Hospital, BaltimoreSinai Hospital, BaltimoreUnion Hospital of Cecil County, ElktonUniversity of Maryland Baltimore Washington Medical Center, Glen BurnieUniversity of Maryland Charles Regional Medical Center, La PlataUniversity of Maryland Harford Memorial Hospital, Havre de GraceUniversity of Maryland Medical Center, BaltimoreUniversity of Maryland Upper Chesapeake Medical Center, Bel AirWestern Maryland Regional Medical Center, CumberlandOne-star Maryland hospitalsLaurel Regional Medical Center, LaurelUniversity of Maryland Prince George's Hospital Center, CheverlyRatings were not available for the following hospitals:Baltimore Convention Center Alternate Care Site, BaltimoreBrook Lane Health Services, HagerstownEastern Shore Hospital Center, CambridgeKennedy Krieger Institute, BaltimoreLevindale Hebrew Geriatric Center and Hospital, BaltimoreMount Washington Pediatric Hospital, BaltimoreSheppard And Enoch Pratt Hospital, TowsonSpring Grove Hospital Center, CatonsvilleSpringfield Hospital Center, SykesvilleThomas B. Finan Center, CumberlandUniversity of Maryland Rehabilitation and Orthopaedic Institute, BaltimoreWalter Reed National Military Medical Center, Bethesda