There are remedies for patients who are denied copies of their medical records, but a lawsuit is not one of them.
The U.S. Department of Health and Human Services (HHS) provides a procedure patients may follow if they believe their rights have been violated under HIPAA laws. It includes filling out a form which may be postal mailed or emailed. They encourage patients to complain to whomever denies them access first.
If the violation is heinous enough, the HHS, or even the Department of Justice, may invoke a penalty to the violating entity, ranging from a $25,000 fine to 10 years in jail and a $250,000 fine.

