Dr. Larson is an out of network provider under most PPO policies.  You will get a Superbill to file with your insurance company.  Check your specific policy for coverage rates.

Labcorp or Quest labs are covered according to the terms of your individual policy.  Some Functional Medicine labs work with insurance, some do not.

If you are covered under Medicare the standard labs ordered by Dr. Larson are covered by Medicare or your secondary coverage.   Provider fees are paid out of pocket only and may not be submitted to Medicare for coverage.