

There are thousands of possible reasons and many of them won’t have anything to do with you. There are fake job postings. There are many jobs where the hiring manager already has someone in mind for the job (but they have to check the required boxes and pretend to open the position to any candidate). Another candidate may have gone to the same school or been in a frat with the hiring manager. The list goes on and on.
Having permission to access to the HIPAA-protected dataset is only the first hurdle. You also need a medically valid or claim processing reason to look at individual patient records within that dataset. People have gotten into trouble by not respecting this. Doctors and other providers are not going to just poke around in the data for fun. Too little to gain for too much risk.
HIPAA is far from perfect, but it does do a decent job of protecting data at rest and in transit. If a bad actor like a hacker manages to get a copy of it, the sensitive stuff will be encrypted.
We handle HIPAA data at my job, and we all take it very seriously. There’s annual training required, and a reporting process for violations. Nobody is looking at anything unless they really need to.
Large corporate health insurance providers are another problem. They of course do have access to it, and I am sure they abuse the privilege for data mining and scheming on claims denial strategies and so on. But that’s a political and enforcement issue not an issue with HIPAA itself. They are violating HIPAA and getting away with it because they are a powerful lobby.