# Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner: Agent-Direct Score F (38.5%)

Site: https://hautarztpraxis-lahner.de/
Report: https://directindex.org/r/hautarztpraxis-lahner.de
Scanned: 2026-10-16 (Provisional, with the action test and the assistant citation check still to come. The hatched part of the bar isn't measured yet.)
Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner is largely invisible to agents.
AI assistants can't open Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner's website, so they go by what other sites say about it.

## Direct links
- Book directly: https://www.hautarztpraxis-lahner.de/ (on the business's own site)
- Phone: +49 211 306077
- Address: Bilker Allee 56 40219 Düsseldorf
- Hours, from OpenStreetMap · Overture Maps: Mon 08:00–13:00; Tue 08:00–13:00, 15:00–18:00; Wed–Fri 08:00–13:00; Sat–Sun closed

## Nearby, also direct
Places near Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner that take a booking or an order on their own website, with no marketplace in between.
- Dr. Med Sabine Bottenbruch (0 m): https://directindex.org/r/9gg.de
- Damanakis Barbara Dr. Med. Allgemeinmediziner, Richter Kerstin Dr. Med (0 m): https://directindex.org/r/damanakis-schnurr.de
- Pzr Oase (0 m): https://directindex.org/r/pzr-oase.de
- DENTsuva Zahnarzt (10 m): https://directindex.org/r/dent-suva.de
- Kinderarztpraxis Dr. Kristina Karim (40 m): https://directindex.org/r/kinderarzt-bilk.de

## What to fix first
- **The site turns away every visitor that isn't a browser, AI agents included.** (+25 points) A plain fetch was refused (cloudflare_challenge). Only a real browser got the page. Every AI crawler and agent gets turned away the same way, so Reachable scores 0 and the rest is measured on the page as the browser rendered it. Ask the host to let the AI user agents through. Guide: https://directindex.org/guides/blocking-ai-crawlers-without-knowing
- **No list of services and prices found.** (+7 points) Agents answer 'what do they treat and what does it cost?' from directories instead. Add a page that lists services and prices as text, and link to it from the homepage. Guide: https://directindex.org/guides/menu-pdf-ai
- **Structured data is incomplete.** (+5 points) Missing: telephone, opening hours. Guide: https://directindex.org/guides/structured-data-restaurant

## What the site tells visitors (Measured, not scored)
- **The footer says © 2024.** Visitors and assistants may read that year as the last time anyone looked after the site. In Düsseldorf, 73% of comparable sites that show a year say 2025 or later.
- **No English version declared.** Visitors from abroad, and assistants answering in English, read the page as it is. In Düsseldorf, 9.2% of comparable sites declare one.

## Fix kit: What to paste

Structured data (JSON-LD). Paste it as one block in the page's head, or in the builder's custom code box. Change anything that's wrong.

```html
<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Physician",
  "name": "Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner",
  "url": "https://hautarztpraxis-lahner.de/",
  "telephone": "+49 211 306077",
  "address": {
    "@type": "PostalAddress",
    "streetAddress": "Bilker Allee 56",
    "postalCode": "40219",
    "addressLocality": "Düsseldorf",
    "addressCountry": "DE"
  },
  "geo": {
    "@type": "GeoCoordinates",
    "latitude": 51.2110457,
    "longitude": 6.767845
  },
  "openingHours": "Mo,We-Fr 08:00-13:00; Tu 08:00-13:00,15:00-18:00; Su,PH off",
  "openingHoursSpecification": [
    {
      "@type": "OpeningHoursSpecification",
      "dayOfWeek": [
        "Monday",
        "Wednesday",
        "Thursday",
        "Friday"
      ],
      "opens": "08:00",
      "closes": "13:00"
    },
    {
      "@type": "OpeningHoursSpecification",
      "dayOfWeek": [
        "Tuesday"
      ],
      "opens": "08:00",
      "closes": "13:00"
    },
    {
      "@type": "OpeningHoursSpecification",
      "dayOfWeek": [
        "Tuesday"
      ],
      "opens": "15:00",
      "closes": "18:00"
    }
  ],
  "potentialAction": [
    {
      "@type": "ReserveAction",
      "target": {
        "@type": "EntryPoint",
        "urlTemplate": "https://www.hautarztpraxis-lahner.de/",
        "actionPlatform": [
          "http://schema.org/DesktopWebPlatform",
          "http://schema.org/MobileWebPlatform"
        ]
      },
      "result": {
        "@type": "Reservation",
        "name": "Reservation"
      }
    }
  ]
}
</script>
```

## Already right
- **robots.txt lets AI crawlers in.** There's no robots.txt, which means everything is allowed.
- **Structured data found (LocalBusiness).** address
- **Appointments on your own site.** Agents can book an appointment without going through a marketplace.

## Where it stands
1052 of 1628 in Düsseldorf dentists, clinics and vets. Top 65% of the sites scanned in this index.

| What the top 10% of the index does | Top 10% | This site |
|---|---|---|
| Take bookings or orders on their own domain | 96% | yes |
| Publish the menu or price list as HTML | 8% | no |
| Let AI crawlers in (no block at the server or in robots.txt) | 89% | no |
| Structured data with address, phone and hours | 16% | no |
| Have an llms.txt | 27% | no |

Nearest places in the index: Dr. Med Sabine Bottenbruch (C, 3 m, https://directindex.org/r/9gg.de); Damanakis Barbara Dr. Med. Allgemeinmediziner, Richter Kerstin Dr. Med (C, 3 m, https://directindex.org/r/damanakis-schnurr.de); Pzr Oase (C, 3 m, https://directindex.org/r/pzr-oase.de); DENTsuva Zahnarzt (B, 6 m, https://directindex.org/r/dent-suva.de); Kinderarztpraxis Dr. Kristina Karim (B, 38 m, https://directindex.org/r/kinderarzt-bilk.de); Praxis Dr. Med. Dent. Christian Cobilanschi (D, 42 m, https://directindex.org/r/cobilanschi-blum-gofman.de); Logopädische Praxis Irina Hudoeva (F, 42 m, https://directindex.org/r/logopaedie-hudoeva.de); Aesthetic Lounge Natalia Grehl (C, 96 m, https://directindex.org/r/aesthetic-grehl.de); Cordula Stark (D, 158 m, https://directindex.org/r/starkinbalance.de); Naturheilpraxis Für Tiere Nicola Karmann (D, 161 m, https://directindex.org/r/tierheilpraxis-karmann.de).

## What assistants answer
The assistants haven't been asked about this business yet. They're asked about the top-ranked businesses in each city index, and about any business as soon as it's claimed. Claim this page to be included.


Compared with its peers: Sites built with Wix 52% (29% A or B, 19855 sites); This site 38.5%.

See what an AI agent reads on this site: https://directindex.org/r/hautarztpraxis-lahner.de/agent-view

## Businesses like Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner in Düsseldorf dentists, clinics and vets

| Group | Sites | Avg score | A or B | This site |
|---|---|---|---|---|
| Businesses of the same kind in Düsseldorf dentists, clinics and vets | 1628 | 46% | 9% | 38.5% |
| Sites built with Wix in Düsseldorf dentists, clinics and vets | 51 | 53% | 18% | 38.5% |

The best of the sites built with Wix in Düsseldorf dentists, clinics and vets: Heilpraktiker & Heilpraktiker Für Psychotherapie Martina Effmert (A 90.8%, https://directindex.org/r/effmert-coaching.de); Ap Dental Europe (B 80%, https://directindex.org/r/apdental.shop); Dr. med.  Hans- Jürgen Backhaus Facharzt für Allgem. Chirurgie (B 80%, https://directindex.org/r/praxis-gradus.de); GRADUS (B 80%, https://directindex.org/r/praxis-gradus.de); Kinderarztpraxis Dr. Kristina Karim (B 80%, https://directindex.org/r/kinderarzt-bilk.de).

With the three fixes above (The site turns away every visitor that isn't a browser, AI agents included; No list of services and prices found; Structured data is incomplete), the score would be about 95.4%, which would be first of 1,628 in Düsseldorf dentists, clinics and vets.

## The direct record
What agents get for Hautarztpraxis Priv.-Doz. Dr. med. Nina Lahner, as JSON: https://directindex.org/api/direct/hautarztpraxis-lahner.de
- Book: https://www.hautarztpraxis-lahner.de/ (own site; found by the scan of 2026-10-16, not yet tested)
- Order: none on record
- Menu: none on record
- Hours: Mo,We-Fr 08:00-13:00; Tu 08:00-13:00,15:00-18:00; Su,PH off (closed now) (from OpenStreetMap)
- Phone: +49 211 306077
- Stable links that count: https://directindex.org/go/hautarztpraxis-lahner.de/book

## Can an agent transact?
Measured, not scored (the score stays at spec v1.0).
- UCP profile (/.well-known/ucp, Google and Shopify's Universal Commerce Protocol): no
- ACP discovery document (/.well-known/acp.json, OpenAI and Stripe's Agentic Commerce Protocol): no
- MCP server card (/.well-known/mcp/server-card.json): no
- Ordering vendor that takes agent orders (Square, Toast, or a vendor whose terms allow agents): no

Only a real browser got this page (a plain fetch got cloudflare_challenge); Readable and Actionable were measured on the rendered page.

## Score breakdown
| Component | Points | Available |
|---|---|---|
| Reachable | 0 | 25 |
| Readable | 10 | 25 |
| Actionable | 15 | 15 (the action test: pending) |
| Cited | 0 | 0 (the assistant citation check: pending) |

## Agent readiness (Cloudflare)
Not measured for this scan.
- JSON-LD for the business: yes

Keep watching this business (https://directindex.org/r/hautarztpraxis-lahner.de/plan): the assistants are asked again every month, and you see what changed. 2 EUR a month or 19 EUR a year.
Deep report: https://directindex.org/r/hautarztpraxis-lahner.de/deep. Ten questions phrased the way people ask them, each assistant's full answer, the eight nearest similar places, the fix plan and a PDF. 5 EUR, paid once. Reading and scanning stay free. These few euros pay for the questions sent to the assistants and for the servers.
Methodology: https://directindex.org/methodology · Rescan now: https://directindex.org/scan?url=hautarztpraxis-lahner.de&force=1