Mitchell, you are dealing with two separate issues here:
1. Whether the doctor will accept your insurance, and;
2. What your insurance policy will actually pay for.
Consider these two scenarios, one or both of which may well be the situation in your case:
3. the doctor accepts payment from your insurance, and your insurance pays little to nothing for the work you had done, because the policy your purchased states that those procedures are not covered, or are covered at a very low rate.
4. your insurance actually covers the work that you had done and the doctor accepts payment from your insurance, but the insurance payment for the work done in this instance all went to your deductible and little or none went to the doctor.
When either 3 or 4 are true, you end up owing the doctor a lot of money out of your pocket. If neither 3 or 4 are true in this instance, if your policy does cover the work you had done, then your insurance company maybe screwed up. In which case either you or the medical office, or both, should have filed an appeal within the time limit imposed by your insurance company. Both you and the medical office should have received some timely notification from your insurance company that payment was denied. If neither you nor the medical office received such notification, and you can prove it, you may have a case against your insurance company. In that situation, you would need to contact a health-care attorney.