If you offer to give $10+ million to any health insurance company or hospital IT company, they will gladly give it to you, plus more fees for updated batches. I

If you offer to give $10+ million to any health insurance company or hospital IT company, they will gladly give it to you, plus more fees for updated batches. In practice it will cost much less if you negotiate well. There also are commercial data aggregators that specialize in it, that GPT can probably name for you. (I don't want to name names here.) At multiple employers, I have worked with this data from various vendors.