Yes. If you do, get a copy of your file on an encrypted CD from Social Security. The evidence on the CD is the exhibit file. This is the only information the judge has about you.
If you know about other medical proof that is not in your file, such as hospital or doctor's records, therapist's notes, or x-ray reports, get copies of them to the judge, or send the judge a summary of them at least 5 business days before the hearing.
If you live in Washington state and you are appealing the denial of your Social Security disability or SSI application, you now can get a free copy of your medical record once every 2 years. You can read the state law about this at RCW 70.02.030(2)(b).
If you have trouble getting your medical records, read Reviewing and Getting Copies of Your Medical Records to learn more. If you believe your medical records are wrong, read My Medical Records Are Wrong to learn more.
Your hearing is the only time during the application process that you will meet the decision maker in person. You must tell the judge everything about your disability, its effects, and why it keeps you from being able to work.