My guess is that the records are long gone. IIRC, a hospital only has to keep records something like 10 years after the last encounter, so if that’s the case, they are surely gone by now...
We needed to get some records from our first daughter's birth. The hospital still had our daughter's records, but my wife's records were destroyed.
It was explained to us (and this is from memory) that the minor's records must be kept until the minor is eighteen, then the "clock" starts to run. The mother's records would be kept for a minimum of ten years, although some hospitals keep them longer. It's really just a function of economics. In our case it was 15 years.
That's how I know HIPAA still applied as we had to sign HIPAA documents to get the records.