Do I have a right to access my medical records?

Can a doctor refuse to hand over my medical records, and are they required to keep them on file for my ongoing care?
Do I have the legal right to request my results just to make some copies?
This might sound like a strange question, but I get the feeling my doctor is being hesitant about letting me see them. I've decided to ask for everything tomorrow because I want to get a second opinion, so I was wondering if anyone knows if I’m actually entitled to that?
Thanks!

You absolutely have the right to this under Section 23 of HIPAA:

Right to Access Medical Records

Section 23.

Patients hold the right to access their entire medical record pertaining to the diagnosis and treatment of their condition.

Furthermore, patients have the right to request copies of the medical documentation mentioned in paragraph 1 at their own expense.

The specific protocols regarding which medical records are handed to a patient upon completion of an exam or treatment cycle are governed by separate federal laws that dictate how such information is managed, stored, collected, and distributed.

Thanks so much, this info is incredibly helpful! I really appreciate it.

Seriously though, you should always keep a copy of your medical records on you just in case!

If we’re talking about the specialist, I’m not handing over a single test result. She can take a look, sure, and I could even make her a photocopy—but I’m keeping all my results myself so when I need to send copies to insurance or a medical board, I actually have them on hand!
They don't even use paper files anymore, either—she just pulls everything up on her computer when you walk in.
The only thing she ever asked was if I could make her a copy of my discharge papers from the Mayo Clinic, nothing else.