Evidence from current publications mainly US, UK, Canada and recently Europe has highlighted the relevancy of Lean healthcare in improving patient pathway efficiency. The aim of this case study is to demonstrate how the French public hospital succeeded at using Lean thinking, and how, using the Lean tools with the team’s involvement, it improved the quality of health services delivered to the patient. Emergency complaints dropped by 50%, length of stay reduced by 30%. This paper highlights how Lean was implemented to revolve around the patient, creating valuable results which improved the global performance, whilst maintaining employees’ involvement and satisfaction. Two Lean experiences in hospital units are described showing the reduction of wastes and the possible monitoring of KPI to sustain Lean pillars Jidoka and JIT. These two first Lean experiences are not alone, more hospital services have been experiencing Lean approaches and more results will be communicated soon in wider publication.