Mass General Brigham deployed an AI-powered app called Care Connect (later rebranded '24/7 Virtual Care') in September 2025, offering patients without a primary care doctor a 24/7 chatbot that interviews them, reviews their medical records, and produces a list of potential diagnoses before connecting them with a telehealth physician. By May 2026, patients had made over 14,000 virtual appointments through the platform.

The platform, built in partnership with K Health (a New York AI firm), launched September 9, 2025, initially for the approximately 15,000 Mass General Brigham patients without a primary care provider. The AI chatbot interviews the patient about their symptoms, reviews their existing medical records, and sends a summary — including, in some cases, a suggested diagnosis and treatment plan — to one of 12 physicians who staff the service remotely. In February 2026, MGB expanded access to patients who have a primary care doctor but need urgent care outside office hours. The service was also rebranded to '24/7 Virtual Care.'