I am not licensed in your state and can provide you with only general advice. You have not indicated what the errors are. Often medical providers utilize the history from prior providers so some errors are continued on. Some errors are harmless, however, if the substance is important to you contact the providers and notify them of the errors. Written notification is always a good idea. If you are fearful that you may suffer some harm from the error report it Immediately.
The federal HIPAA statute provides a mechanism by which you can protest/correct medical records. I am not sure that it is worth all of the effort it will take. Your blood work records already state what you claim. If your Dr. was prescribing medications which are dangerous to your condition, that is a good reason to leave that doctor's care and find a new Dr.
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Mr. Lundeen is licensed to practice law in Florida and Vermont. The response herein is not legal advice and does not create an attorney/client relationship. The response is in the form of legal education and is intended to provide general information about the matter within the question. Oftentimes the question does not include significant and important facts and timelines that, if known, could significantly change the reply and make it unsuitable. Mr. Lundeen strongly advises the questioner to confer with an attorney in your state in order to ensure proper advice is received.