The liability to pay tax on your pension/disability benefits does not give you any special rights in Norway. There is no direct connection between tax liability and access to various publicly financed benefits and welfare services. This applies both to persons living in Norway and to persons living abroad.
The right to health services etc. from NAV is dependent on membership of the Norwegian National Insurance Scheme. Paying tax does not make you a member of the National Insurance Scheme.
All questions about National Insurance contributions and membership of the Norwegian National Insurance Scheme must be raised with NAV International, P.O. Box 8138 Dep, NO-0033 Oslo, or email: email@example.com