Dipl.-Psych. Jan Kossack is member in the luxemburgish association for psychologists (SLP).

Dipl.-Psych. Jan Kossack is also listed in the directory PSYLUX of Luxemburg.

The private practice ¨UPGRADE YOUR LIFE¨ of Jan Kossack is also accredited by the ministry of family affairs in Luxemburg

(SECO AI/Ct 201303/76).   

The N.I.E. for counseling, therapy and training in Spain is: Y3747847-B