There was a recent discussion about penlights for members of the medical field on Reddit. It’s worth a read and has a few good suggestions from several EMTs and physicians.
I’m not a medical professional, but I like the Lumintop IYP365. Here’s an Amazon link.
It has a Nichia 219C emitter with high CRI for accurate color rendering. My sample always starts on medium, but I see in the Amazon reviews that newer models seem to have mode memory.