Write a letter to the hospital administrator and request a complete copy of your child's medical records.
Send a copy of that letter to your health insurer.
Allow them time to respond.
In the interim, hand carry a copy if the letter into the hospital and request a copy of the child's medical records in person.
Make sure you keep all correspondence sent and received.
You can always sue for specific performance, but that comes later if they continue to demy or delay.
Also, contact a lawyer.
Discuss your case and determine which options you'll pursue.
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