That is misinformation. HIPAA covered healthcare providers are legally required to give you copies of your health information upon request, and can only charge a nominal fee for this service (in practice it's usually free). Any patient who is blocked from accessing their own medical records should file a formal complaint with HHS; they have fined multiple provider organizations for violations.
" Two categories of information are expressly excluded from the right of access:
Psychotherapy notes, which are the personal notes of a mental health care provider documenting or analyzing the contents of a counseling session, that are maintained separate from the rest of the patient's medical record. See 45 CFR 164.524(a)(1)(i) and 164.501.
Information compiled in reasonable anticipation of, or for use in, a civil, criminal, or administrative action or proceeding. See 45 CFR 164.524(a)(1)(ii).
https://www.hhs.gov/hipaa/for-individuals/guidance-materials...
https://www.hhs.gov/hipaa/for-professionals/compliance-enfor...