I've been working on integrating GPT-3 into a clinical reference tool by "grounding" its responses using data from the NCBI StatPearls clinical handbook -- doing that seems to lead to accurate and relevant responses much of the time, but still occasionally returning partially-correct or irrelevant information.
[0] demo - https://labs.cactiml.com/medqa
[1] some screenshots and details - https://twitter.com/samarthrawal/status/1620545601296564228