Barmer moved from here to the "Storchengallerie" (follow the "Havelpassage" in the east)

https://www.barmer.de/presse/bundeslaender-aktuell/berlin-brandenburg/archiv-pressemitteilungen/neue-geschaeftsstelle-hennigsdorf-1260660

new location:
Barmer Hennigsdorf
Am Havelplatz 2-10
16761 Hennigsdorf 