How to Call AOK From Abroad (There's No Single Number)
8/19/2026
Quick answer: There's no single AOK phone number. AOK is a federation of independently run regional insurers, AOK Bayern, AOK Nordost, AOK Rheinland/Hamburg, and others, each with its own hotline. Find yours with AOK's postal-code lookup tool, "Meine AOK ermitteln," then check whether your regional number is a standard landline (works from abroad with +49) or a toll-free 0800 line (doesn't).
Why AOK doesn't have one number
Unlike TK or Barmer, which are each a single national organization, AOK is a brand shared by 11 legally independent regional health insurers. Your AOK is determined by where you live or work, and each regional AOK runs its own customer service, its own phone numbers, and in some cases its own hours. This is the same pattern as Germany's local Finanzamt offices, decentralized by design, with no single hotline that covers everyone.
Regional AOK numbers
A selection of official regional numbers, some are standard landlines that work from abroad as-is, others are toll-free 0800 lines that won't:
| Region | Number | Works from abroad? |
|---|---|---|
| AOK Bayern | 089 31 21 20 | Yes, standard landline. Add +49, drop the leading 0 |
| AOK Rheinland/Hamburg | 0211 81950000 | Yes, standard landline |
| AOK Bremen | 0421 17610 | Yes, standard landline |
| AOK Hessen | 069 66816-334000 | Yes, standard landline |
| AOK Rheinland-Pfalz/Saarland | 06351 4030 | Yes, standard landline |
| AOK NordWest | 0231 4193-0 | Yes, standard landline |
| AOK Niedersachsen | 0800 0265637 | No, toll-free, does not work from abroad |
| AOK Nordost | 0800 2650800 | No, toll-free |
| AOK PLUS | 0800 1059000 | No, toll-free |
| AOK Sachsen-Anhalt | 0800 2265726 | No, toll-free |
Source: AOK's official service numbers page. This isn't every region, use the tool below to confirm yours.
How to find your regional AOK
If you're not sure which one you belong to, two reliable ways:
- Check your AOK insurance card or Mitgliedsausweis. The regional name (e.g. "AOK Bayern") is printed on it.
- Use "Meine AOK ermitteln" on AOK's website, a postal-code lookup that tells you exactly which regional AOK and phone number applies to you.
What to have ready before you call
- Your Versichertennummer (insurance number)
- Your postal code or region, in case you need to confirm you're calling the right AOK
- The specific question, claim, or document your call relates to
Best time to call
Hours vary by region, but most regional AOKs run standard business hours, roughly Monday to Friday, 8am to 6pm CET.
- UK: Germany is 1 hour ahead, so hours line up closely with your own.
- US East Coast: Germany is 6 hours ahead, so call in your morning to catch their afternoon.
- UAE/Gulf: Germany is 2 to 3 hours behind, so call in your evening.
The cheaper way to actually make the call
Once you've confirmed your regional AOK's landline number, roaming rates still apply on a foreign SIM, and insurance calls often involve some hold time. With DialVia, you call the real number over Wi-Fi from your browser instead:
- Open DialVia and sign up (about 30 seconds)
- Select Germany as the destination
- Enter your regional AOK's number
- Hit call
Frequently asked questions
Is there one AOK phone number for all of Germany? No. AOK is a federation of 11 independent regional insurers, each with its own hotline.
How do I find out which AOK I belong to? Check your AOK insurance card, or use the "Meine AOK ermitteln" postal-code lookup on AOK's website.
Can I call my AOK from abroad? It depends on your region. Some regional AOKs (Bayern, Rheinland/Hamburg, Bremen, Hessen, and others) use standard landlines that work from abroad with the +49 prefix. Others use toll-free 0800 numbers that don't.
Which regional AOKs have numbers that work from abroad? Bayern, Rheinland/Hamburg, Bremen, Hessen, Rheinland-Pfalz/Saarland, and NordWest all publish standard landline numbers. Niedersachsen, Nordost, PLUS, and Sachsen-Anhalt currently list toll-free 0800 numbers instead.
Need another German health insurer's number? See the full guide to calling German health insurance providers from abroad, covering TK and Barmer too.
👉 Try DialVia to call from your browser in 30 seconds. Didn't connect? You don't pay. Or return to the DialVia homepage to learn more.