• Asociación de Fabricantes de Gases Industriales y Medicinales (AFGIM): This association includes companies such as OXIGENO DEL NORTE S.A., OXIMESA S.L., NIPPON GASES ESPAÑA, AIR LIQUIDE ESPAÑA, LINDE GAS ESPAÑA, and MESSER IBÉRICA, the main suppliers of medical gases and oxygen in Spain.
• ASISA: Provides information about oxygen therapy in their policies and procedures for authorizing treatment.
• Oximesa (Nippon Gases): ): A company specializing in home oxygen therapy offering various devices and 24/7 technical support.
• Linde Médica: Provides installation and maintenance of oxygen concentrators at home in many Spanish provinces
• Vivisol Ibérica: Offers respiratory therapy and oxygen therapy services with home management and medical assistance.
• Business directory with listings of several companies supplying medical oxygen in Spain

• Federación Española de Asociaciones de Pacientes Alérgicos y con Enfermedades Respiratorias, FENAER 
• EPOC España – Asociación Española de Pacientes y cuidadores de EPOC
• Alfa-1 España 
•  Asociación de Afectados Crónicos de las Vías Respiratorias, “A Tot Pulmó”
• Asociación de Pacientes con Patología Respiratoria del Principado de Asturias, ASMAASTURIAS
• Aire. Asociación catalana de enfermos y trasplantados pulmonares
• Asociación de Enfermos Respiratorios de Málaga, ALERMA 
• Asociación Madrileña de Trasplantados de Pulmón, PulmónMadrid TX 
• Asociación de asmáticos, alérgicos y enfermos respiratorios de Sevilla, Sevilla Respira 

• The Spanish Ministry of Health official website, which includes access to digital health services like individual health cards, digital medical records, and electronic prescriptions
• The national directory of local health centres (centros de salud), hospitals, and emergency facilities run by regional governments
• The direct search on the Ministry of Health site for primary healthcare and hospitals
• The Social Security website for healthcare access information, especially relevant for residents and those with right to public health system services

Ask your National Contact Point about available resources.