The best atrial septal defect surgery clinics in Mexico hold JCI and General Health Council accreditations, operating in cities like Mexicali and Monterrey. According to Bookimed’s ranking, the top clinics are Hospital de la Familia, Hospital Zambrano Hellion, and Hospital San Jos Tecnolgico de Monterrey. They stand out for JCI-accredited cardiac surgery teams, board-certified specialists, and strict international safety protocols. When choosing a provider, look for international accreditation, certified cardiac surgeons, and proven surgical outcomes, with cost-effective care. Always consult a qualified cardiac surgeon before making a decision.