Serviço Nacional de Saúde (SNS)
Serviço Nacional de Saúde (SNS), which is the National Health Service in Portugal.
The SNS is responsible for providing healthcare services to Portuguese residents. To access healthcare services under the SNS, individuals are typically required to have a user card known as the "Cartão do Utente" or "Cartão Nacional de Saúde" (CNS). This card is not referred to as an "SNS number" but serves as an identification card for healthcare purposes.