General medical practice activities companies in Mainz

Mainz ·Currently listed companies in the General medical practice activities industry headquartered in Mainz.

13 companies

Berufsausübungsgemeinschaft Prof. Dr. Dr. med. Sven Roy Quist, Dr. med. Jennifer Elisabeth Quist, Fachärzte für Haut- und Geschlechtskrankheiten, Partnerschaft PartG · PR 20313 Koblenz · 2017
7c2f51085d…
Dr. Kasten Hautmedizin GmbH GmbH · HRB 47685 Mainz · 2017
56cc9cd4aa…
EOLIA MVZ GmbH GmbH · HRB 49055 Mainz · 2019
2deddf7680…
Fontana Klinik GmbH GmbH · HRB 4305 Mainz · 1990
f6cf2ee762…
Gastroenterologische Gemeinschaftspraxis eGbR eGbR · GsR 367 Mainz · 2025
6b02127967…
GZ Fachärzte Rhein-Main-Nahe MVZ GmbH GmbH · HRB 50030 Mainz · 2020
cef3729eb3…
Haut- und Venenzentrum Mainz - Dr. Kirschner & Kollegen MVZ GmbH GmbH · HRB 50820 Mainz · 2021
0cb047bc08…
Hormon- und Stoffwechselzentrum Prof. Wüster MVZ GmbH GmbH · HRB 49101 Mainz · 2019
6c03ead074…
MVZ der Universitätsmedizin Mainz GmbH GmbH · HRB 41370 Mainz · 2008
49d03e1096…
Pneumologische Gemeinschaftspraxis Dr. med. David Semmler Dr. med. Andreas Kümmel Fachärzte für Innere Medizin und Pneumologie eGbR eGbR · GsR 533 Mainz · 2025
3e8c56bbb6…
Primärarztpraxis MVZ GmbH GmbH · HRB 47238 Mainz · 2017
7523e145dd…
VIPMED Polina Vaysman e.Kfr. e.K. · HRA 40757 Mainz · 2008
4d54140e67…
Wirtschaftsgesellschaft Hausärzteverband Rheinland-Pfalz GmbH GmbH · HRB 21077 Koblenz · 2008
59ce3b12c4…

All industries in Mainz

Live API

GEThandelsregister.ai/api/v1/search-organizations

?limit=20

&filters={"city":"Mainz","industry_code":"86.21.0","industry_scheme":"WZ2025"}

# pip install handelsregister
from handelsregister import Handelsregister

client = Handelsregister(api_key="YOUR_API_KEY")  # or set HANDELSREGISTER_API_KEY
page = client.search_organizations(
    filters={
        "city": "Mainz",
        "industry_code": "86.21.0",
        "industry_scheme": "WZ2025"
    },
    limit=20,
    skip=0,
)
print(page["total"])
for item in page["results"]:
    print(item["name"], item["registration"]["register_number"])

// npm install handelsregister
import { Handelsregister } from 'handelsregister';

const client = new Handelsregister('YOUR_API_KEY'); // or set HANDELSREGISTER_API_KEY
const page = await client.searchOrganizations({
  filters: {
      "city": "Mainz",
      "industry_code": "86.21.0",
      "industry_scheme": "WZ2025"
  },
  limit: 20,
  skip: 0,
});
console.log(page.total);
for (const item of page.results) {
  console.log(item.name, item.registration.register_number);
}

// npm install handelsregister
const { Handelsregister } = require('handelsregister');

const client = new Handelsregister(process.env.HANDELSREGISTER_API_KEY);
(async () => {
  const page = await client.searchOrganizations({
    filters: {
        "city": "Mainz",
        "industry_code": "86.21.0",
        "industry_scheme": "WZ2025"
    },
    limit: 20,
    skip: 0,
  });
  console.log(page.total);
  for (const item of page.results) {
    console.log(item.name, item.registration.register_number);
  }
})();

curl 'https://handelsregister.ai/api/v1/search-organizations?limit=20' \
  -H 'x-api-key: YOUR_API_KEY' \
  -G --data-urlencode 'filters={"city":"Mainz","industry_code":"86.21.0","industry_scheme":"WZ2025"}'

{
    "results": [
        {
            "entity_id": "<32-char hex>",
            "name": "<string>",
            "registration": {
                "court": "<string>",
                "register_type": "<string>",
                "register_number": "<string>"
            },
            "address": {
                "house_number": "<string>",
                "street": "<string>",
                "postal_code": "<string>",
                "city": "<string>",
                "county": "<string>",
                "state": "<string>",
                "country": "<ISO country>",
                "coordinates": {
                    "latitude": "<float>",
                    "longitude": "<float>"
                }
            },
            "registration_date": "<ISO date>",
            "purpose": "<string>"
        }
    ],
    "total": "<int>",
    "meta": {
        "request_credit_cost": "<int>",
        "credits_remaining": "<int>"
    }
}

results[]

entity_id string

Stable 32-char hex identifier. Pass straight into /fetch-organization as `q`.

name string

Registered company name.

registration object

address object

Postal address with street, house_number, postal_code, city, county, state, country and coordinates (latitude/longitude).

registration_date date

Initial entry into the commercial register (ISO date).

purpose string

Stated business purpose (Unternehmensgegenstand).

top-level

total integer

Total result count for pagination.

meta.request_credit_cost integer

Credits actually charged for this call.

meta.credits_remaining integer

Account credit balance remaining after this call.

Location · Industry · Legal form · Full-text

Filters & master data — via search-organizations

City, industry, legal form, registration date: every argument combinable through the filters parameter. One REST endpoint, every German company.

Location & geo Filter by city, postal code, state and county through city, postal_code, state and county.
Industry (WZ2025) Industry segmentation via the official WZ2025 codes — industry_code combined with industry_scheme.
Legal form GmbH, AG, KG, OHG and more via legal_form_code.
Company size bs_company_size_category – small, medium, large based on balance-sheet totals.
Active status Restrict to active entries or include deleted companies via active.
Registration date Date ranges via registration_date_from and registration_date_to.
Full-text search Free-text query via the q parameter (min. 2 characters).
Pagination skip and limit (up to 30 results per call) for deep lists.
Master data per result entity_id, name, address, registration and registration_date – pass entity_id straight to /fetch-organization.

Run every filter live with an API key. Get an API key →

Code · AI-Agents · No-Code · Workflows

Drops into any stack

The search-organizations API speaks every mainstream client: REST, Python, Node, MCP for AI agents, n8n and webhook platforms.

REST API Simple GET request with the X-API-KEY header and JSON-encoded filters. Python requests, httpx or your favourite library — pass filters via json.dumps. Node.js fetch or axios with URLSearchParams. Works in edge, worker and browser runtimes. MCP Server Directly in Claude, Cursor or any MCP-aware AI client as the search_organizations tool. n8n Pre-built custom node for workflow automation — city, industry and size as filter inputs. Webhook Callable from Zapier, Make or any other webhook platform.

This list in your app

Grab an API key and filter every German company by city, industry, size and more — straight from your application. One REST endpoint, every result.

Get an API key

Filters & master data — via search-organizations

Drops into any stack

This list in your app

Cookie Settings

Customize Cookie Settings