Old Isisford District Hospital
Starting in 1948 and continuing into the 1950s, extensions were made to Isisford Hospital including: a kitchen, operating theatre and an extension to one of the 1892 buildings. Blackall Hospitals Board was advised by the Department of Health and Home Affairs that its plan for remodelling the Isisford Hospital had been approved; there was also approval for installation of an X-ray plant at Isisford.
Countess of Chester Hospital
The hospital has its origins in the "Cheshire Lunatic Asylum" which opened on part of the site in 1829. The name of the facility changed to "County Mental Hospital" in 1921, to the "Upton Mental Hospital" on joining the National Health Service in 1948, and then to the "Deva Hospital" in 1950.
By 1948, Chester Royal Infirmary specialized in surgery and out-patients and the City Hospital, Hoole, in chronic illnesses, chest, maternity, paediatric, and general medical cases. Pre-war plans for the expansion of the Infirmary were eventually revived. In 1963 a large out-patient and casualty department was opened at the infirmary; this was accompanied with the completion of the Chester inner ring road in 1967. However, after the creation of the West Cheshire HMC (hospital management committee), a fresh decision was taken to focus all the hospital services for the district at a purpose-built site on Liverpool Road, adjacent to the county mental hospital facilities.
In 1968, the new site was renamed the "West Cheshire Hospital". The maternity unit at the City Hospital was transferred to a new building at the south end of the site in 1971. With the opening of a new general wing and A&E department in 1983, several surgical departments from the Royal Infirmary were relocated to the new buildings. On 30 May 1984, West Cheshire Hospital was officially renamed the "Countess of Chester" Hospital by Prince Charles and Princess Diana. In 1993, the Royal Infirmary site was closed after its remaining departments were transferred to the Countess. The City Hospital, which had become a 120-bed geriatric unit, was closed in 1994 after its services were taken over by the Countess in 1991.
In January 2006, the CARE building, sometimes known as Outpatients Four, opened and started providing new facilities the Cardiac Catheter Laboratory, Department of Clinical Audiology, Renal & Urology Department and ENT Department.
In 2007, the Countess of Chester became the first hospital in the UK to completely ban smoking for both workers and patients. In April 2014 a new two storey wing was opened containing a state of the art 21 bed Intensive Care Unit on the first floor, replacing the old HDU and ITU wards. On the ground floor is an expanded endoscopy unit and the bariatric outpatients department.
Part of the old mental health hospital building, now called the 1829 Building, serves as headquarters for West Cheshire Clinical Commissioning Group, Cheshire and Wirral Partnership NHS Foundation Trust, and various other NHS support organisations. The Bowmere mental health hospital is on the same site, as is Ancora House, a purpose-built Child and Adolescent Mental Health Services.
Before becoming a foundation trust in 2004, the trust received top 3-star rating in the former national performance charts. In 2016, the CQC rated the hospital as requiring improvement.
The Trust lost the contract for sexual health services when Cheshire West and Chester Council awarded it to East Cheshire NHS Trust in December 2014.
In 2015/6 it cancelled urgent operations 37 times - the highest number of any NHS trust in England.
In July 2016 the Neonatal unit at the Countess of Chester Hospital stopped accepting premature infants born before 32 weeks, partially due to an unexplained high mortality rate in 2015 and 2016, instead diverting them to other hospitals in the North West of England, such as Alder Hey. A series of investigations were initiated to ascertain the reasons for the sharp rise in mortalities, with an independent review being carried out by the Royal College of Paediatrics and Child Health and the Royal College of Nursing. Despite this report finding some staffing levels "inadequate", the Foundation Trust were unable to identify the fundamental cause or causes of the high mortality rate, with the independent report similarly finding "no single cause or factor identified to explain the increase .. seen in [the] mortality numbers". In May 2017, the Foundation Trust brought Cheshire Police in to assist with the ongoing review, stating this was to "seek assurances that enable us to rule out unnatural causes of death."
On 3 July 2018, a registered nurse working in the neonatal unit at the hospital was arrested by police and charged with eight counts of suspected murder and six counts of attempted murder, following a year-long investigation. The investigation was subsequently widened to include Liverpool Women's Hospital, another location at which the nurse had worked. The nurse was bailed on 6 July as the police continued their enquiries.