No referral is required from the GP for treatment therapy
An appointment with the therapist can be made without the intervention of the GP.
The consultations are almost entirely covered by the supplementary insurance. The additional insurance is an additional insurance with its own policy. This has its own conditions and is therefore completely separate from the deductible of the basic health insurance package.
You do not need a referral for the treatment.
An overview of all health insurers and the reimbursements for alternative medicine (orthomolecular therapy, energetic therapy, body-oriented psychotherapy) in the additional package you can read on: