The company behind ChatGPT didn't set out to tackle health care. But despite ongoing concerns about its technology's tendency to hallucinate, OpenAI is already inking deals with health care customers desperate to use it to speed up workflows without burdening their staff. OpenAI sells secure, enterprise commercial licenses for ChatGPT and its API to a range of health customers. Early adopters tell STAT they're aware of generative AI's risks, and are careful not to let it dispense medical advice directly to patients — instead, they're harnessing its ability to draw from disparate data sources to generate coherent responses in narrowly-defined settings: summarizing medical records, suggesting treatment plans, or distilling medical jargon into plain language.