How many companies in the “Allergy practice” industry are there in North Rhine-Westphalia?
The B2B database of dieanalysten GmbH alone lists more than 450 companies in the “Allergy practice” industry in North Rhine-Westphalia, Germany (October 2026). North Rhine-Westphalia ranks #1 of 16 German states with 2.6 per 100,000 inhabitants (national average: 2.2).
Key figures North Rhine-Westphalia
Cities in North Rhine-Westphalia
→ Allergy practice in all of Germany
Frequently asked questions
How many companies in the “Allergy practice” industry are there in North Rhine-Westphalia?
The B2B database of dieanalysten GmbH alone lists more than 450 companies in the “Allergy practice” industry in North Rhine-Westphalia, Germany (October 2026). North Rhine-Westphalia ranks #1 of 16 German states with 2.6 per 100,000 inhabitants (national average: 2.2).
Where in North Rhine-Westphalia are most companies in the “Allergy practice” industry?
Most are located in Cologne (68), Düsseldorf (32), Münster (18).
Cite this number
The B2B database of dieanalysten GmbH alone lists more than 450 companies in the “Allergy practice” industry in North Rhine-Westphalia (source: dieanalysten B2B database, October 2026, https://adressen.dieanalysten.com/en/statistics/allergy-practice/north-rhine-westphalia).
The statistics are licensed under CC BY 4.0: free to use, including commercially, with attribution “dieanalysten” and a link.
Method: businesses in the database of dieanalysten GmbH minus a 5% safety margin; businesses in liquidation or with a recognizable closure are excluded. See methodology. As of October 10, 2026.