ZaCK — Zahnarztpraxis Christina Krause
According to our open methodology, this clinic scored 61.1/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #8 of 25 ranked clinics · Last checked: 1 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#861.1/100
- Best for Expats#562/100
- Best for Dental Implants#1250/100
- Best for Emergency Dental Care#859.5/100
- Best Price Transparency#344.9/100
- Best English-speaking Clinics#269.3/100
- Best for Families / Children#963.1/100
- Sleep Dentistry (GA / deep sedation)not ranked
General Anaesthesia & Deep Sedation
Whether the clinic documents treatment under general anaesthesia or deep / twilight sedation — "sleep dentistry", where the patient is asleep and unaware (does not feel, see, or hear the procedure). Ordinary conscious sedation, where the patient stays awake and responsive, does not count here. This is informational and does not affect the transparency score.
- ? General anaesthesia / deep sedation (sleep dentistry) — Not verified
Summary
ZaCK is a general dental practice in Hamburg-Sülldorf run by Christina Krause with a second dentist, Veronika Kovaleva, offering prophylaxis, implantology, pediatric dentistry and same-day CEREC ceramic crowns. The practice publishes a dedicated English-language page and explicitly welcomes English-speaking patients, but shows no price figures.
Strengths
- Information Transparency: 20 of 20 points.
- Reputation & Reviews: 17 of 20 points.
- Communication & Service: 8 of 10 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 15 verifiable points (missing: prices or price ranges published; cleaning price listed; filling price listed; crown price listed; implant price listed; consultation price listed; x-ray / imaging price listed)
Score Breakdown
Every criterion below is scored from public sources. ✓ verified yes · ✗ verified no / not found · ◐ partial · ? unverified (scores 0, not a negative finding).
Information Transparency
Whether basic facts about the clinic - its team, premises, services, and location - are publicly verifiable.
| ✓ | Has a working website [s1] | 4/4 |
| ✓ | Dentist names listed Christina Krause, Veronika Kovaleva. [s1] | 3/3 |
| ✓ | Dentist specializations listed Prophylaxis, implantology, pediatric dentistry. [s1] | 2/2 |
| ✓ | Real clinic photos [s1] | 2/2 |
| ✓ | Service list published [s1] | 3/3 |
| ✓ | Clear contact details [s1] [sm] | 2/2 |
| ✓ | English website version Dedicated /english page. [s1] | 2/2 |
| ✓ | Address and map published [s1] [sm] | 2/2 |
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
Reputation & Reviews
Public review signals. The Google rating is adjusted with a Bayesian prior (rating 4.0, weight 25) so a 5.0 from a handful of reviews does not outrank a 4.8 from hundreds.
| ◐ | Google rating (Bayesian-adjusted) as of 2026-09-01 [sm] | 5/6 |
| ◐ | Google review volume [sm] | 1.5/3 |
| ✓ | Review recency Newest Google review is dated 2026-09-23 (listing read 2026-09-26). [zack-zahnarztpraxis-krause-gbp-2026-09-26] | 3/3 |
| ✓ | Clinic responds to reviews Owner replies visible under multiple reviews, signed 'Ihr ZaCK-Team'. [sm] | 2/2 |
| ✓ | No recurring complaints Low ratings are few (1★ 1 / 2★ 0 / 3★ 1 / 4★ 0 / 5★ 86; 1.1 % one or two stars) and too scattered to share a theme. [zack-zahnarztpraxis-krause-deepen] | 2/2 |
| ✓ | No suspicious review patterns 10 Google reviews read (2020-02-24 to 2026-09-30): no burst of five-star ratings (at most 1 on one day), no repeated wording; accounts hold 1-105 reviews, 2 single-review. [zack-zahnarztpraxis-krause-deepen] | 2/2 |
| ✓ | Active Facebook presence [s1] | 1/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found via its search for "ZaCK Hamburg" and "ZaCK Dental"; the clinic's site does not link to TripAdvisor (checked 2026-10-05). [zack-zahnarztpraxis-krause-tripadvisor] [zack-zahnarztpraxis-krause-tripadvisor-2] | 0/0.5 |
| ✓ | Other review platforms jameda, the German doctor-review site, has a page for the practice's dentist at its address: 5.0 of 5 from 6 patient reviews (checked 2026-10-02). [zack-zahnarztpraxis-krause-platforms] | 0.5/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✗ | WhatsApp / LINE available [s1] | 0/2 |
| ✓ | Response speed Site advertises a wait time under 15 minutes. [s1] | 1.5/1.5 |
| ✓ | English spoken "We also speak English!" — dedicated English page. [s1] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible Online booking available via Maps listing. [sm] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ✓ | Convenient opening hours Monday and Thursday evenings to 19:00. [s1] | 1.5/1.5 |
AI & Search Visibility
Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist Germany", "English speaking dentist Germany", "dental implants Germany", "emergency dentist Germany", "Germany dental clinic for expats".
| ✗ | Mentioned for: best dentist Germany [sqBest] | 0/1 |
| ✓ | Mentioned for: English speaking dentist Germany Named directly as the first web result: 'English Speaking Dentist in Hamburg — ZaCK Christina Krause'. [sqEng] | 1/1 |
| ✗ | Mentioned for: dental implants Germany [sqImp] | 0/1 |
| ✗ | Mentioned for: emergency dentist Germany [sqEmg] | 0/1 |
| ✓ | Mentioned for: Germany dental clinic for expats Named directly again as the top web result for this query. [sqExp] | 1/1 |
| ✓ | Structured data on website Home page HTML carries JSON-LD of schema.org type Dentist. [zack-zahnarztpraxis-krause-site] | 1.5/1.5 |
| ? | Google indexing quality | 0/2 |
| ✓ | Dedicated service pages [s1] | 1.5/1.5 |
Ranking leaders in AI answers
The queries above are this index's own check. The three leading clinics have also been measured in full: how often ChatGPT and Gemini name them when a patient asks them to recommend a dentist.
- #1KU64 Die Zahnspezialisten57.3 of 100View report → report in German
- #2Berlin Smile Zahnzentrum2.5 of 100View report → report in German
- #3The Urban Dentist0 of 100View report → report in German
Measured by Ansmeter, 9 October 2026. Ansmeter is an affiliated service. Its figure is not part of this rating and does not affect positions — scores change only when public data changes.
Licensing & Credentials
Whether the clinic publishes its operating licence and the dentists working there together with their professional licence numbers. A verified “not published” is recorded as a red flag; data we have not checked yet is shown as unverified and carries no penalty.
Clinic operating licence: not checked against public sources yet — unverified, no penalty
Dentists & register entries (KZV / dental chamber)
| Dentist | Specialization | Register entry |
|---|---|---|
| Christina Krause [s1] [reg1] | Owner | not verified |
| Veronika Kovaleva [s1] | Dentist | not verified |
Dentists are named; their licence numbers have not been checked against public sources yet — unverified, no penalty.
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Medical Infrastructure: On-site X-ray
- Medical Infrastructure: CBCT (3D imaging)
- Medical Infrastructure: Orthodontics
- Medical Infrastructure: Oral surgery
- Medical Infrastructure: Works with international patients
- AI & Search Visibility: Google indexing quality
Unverified items score 0 points but are not treated as negative findings. If you can document any of them, please send a correction.
Contact Information
| Website | https://www.zack-hh.de/ |
|---|---|
| Phone | +49 40 8321481 |
| Google Maps | Map listing |
| Address | Sülldorfer Kirchenweg 202, 22589 Hamburg-Sülldorf |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://www.zack-hh.de/ | Team, services, hours, English page, contacts | 2026-09-01 |
| sm | https://www.google.com/maps/place/ZaCK+-+Zahnarztpraxis+Christina+K… | Google rating 4.9 (86 reviews) as of 2026-09-01, address, geo, owner replies to reviews, online booking | 2026-09-01 |
| sqBest | search:best dentist Hamburg | AI/search visibility scout 2026-09-01 | 2026-09-01 |
| sqEng | search:English speaking dentist Hamburg | AI/search visibility scout 2026-09-01; named directly | 2026-09-01 |
| sqImp | search:dental implants Hamburg | AI/search visibility scout 2026-09-01 | 2026-09-01 |
| sqEmg | search:emergency dentist Hamburg | AI/search visibility scout 2026-09-01 | 2026-09-01 |
| sqExp | search:Hamburg dental clinic for expats | AI/search visibility scout 2026-09-01; named directly | 2026-09-01 |
| reg1 | https://www.zahnaerzte-hh.de/ | Zahnärztekammer Hamburg / KZV patient portal — unreachable (connection refused) on 2026-09-01 | 2026-09-01 |
| zack-zahnarztpraxis-krause-gbp-2026-09-26 | https://www.google.com/maps?cid=10667572950486341246&hl=en | Google listing read on 2026-09-26: rating 4.9 from 87 reviews; star histogram 1★ 1 / 2★ 0 / 3★ 1 / 4★ 0 / 5★ 85; newest review dated 2026-09-23; 4 of the 5 newest reviews carry an owner reply, latest dated 2026-09-23. | 2026-09-26 |
| zack-zahnarztpraxis-krause-platforms | https://www.jameda.de/profil/christina-krause | jameda page of Christina Krause, practising at her practice at Sülldorfer Kirchenweg 202, 22589 Hamburg (the card's address): 5.0 of 5 from 6 patient reviews, read 2026-10-02 | 2026-10-02 |
| zack-zahnarztpraxis-krause-site | https://www.zack-hh.de/ | Home page HTML read 2026-10-02: JSON-LD block with @type Dentist (alongside WebSite) | 2026-10-02 |
| zack-zahnarztpraxis-krause-deepen | https://www.google.com/maps?cid=10667572950486341246&hl=en | Google listing "ZaCK - Zahnarztpraxis Christina Krause - Hamburg/ Sülldorf" (Dentist, Cosmetic dentist, Dental implants periodontist, Endodontist, Pediatric dentist, Periodontist), read 2026-10-02 in two review orders (newest, lowest-rated first): 4.9 from 88 reviews (1★ 1 / 2★ 0 / 3★ 1 / 4★ 0 / 5★ 86); 10 distinct reviews read, dated 2020-02-24 to 2026-09-30; owner replies on 9 of them | 2026-10-02 |
| zack-zahnarztpraxis-krause-tripadvisor | https://www.tripadvisor.com/TypeAheadJson?action=API&details=true&q… | TripAdvisor's own search, read 2026-10-05: 12 suggestions for "ZaCK Hamburg" (6 attractions, 1 hotel, 5 restaurants), none of them a dental practice in or near Hamburg; 12 suggestions for "ZaCK Dental" (6 attractions, 1 hotel, 5 restaurants), none of them a dental practice in or near Hamburg; no listing for this clinic | 2026-10-05 |
| zack-zahnarztpraxis-krause-tripadvisor-2 | https://www.zack-hh.de/ | Clinic's website, home page read 2026-10-05: no link to a TripAdvisor page | 2026-10-05 |
Change History
| Date | Change |
|---|---|
| 2026-10-05 | TripAdvisor presence checked on 2026-10-05: no listing found for this clinic. |
| 2026-10-02 | Read 10 of the clinic's Google reviews on 2026-10-02: no repeated complaint, no suspicious review pattern. |
| 2026-10-02 | Website structure read on 2026-10-02: business structured data found. |
| 2026-10-02 | Presence on review platforms checked on 2026-10-02: a jameda review page found. |
| 2026-09-29 | Corrected 2026-09-29: review recency within 3 months (newest review dated 2026-09-23). |
| 2026-09-01 | Initial research |
A question or a correction?
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