山道歯科 国際矯正・インプラントクリニック (Yamamichi Dental Clinic)
According to our open methodology, this clinic scored 82.8/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #1 of 21 ranked clinics · Last checked: 6 September 2026
82.8/100
Positions by Rating Profile
- Overall Transparency & Trust#182.8/100
- Best for Expats#180/100
- Best for Dental Implants#280.2/100
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#580.1/100
- Best English-speaking Clinics#280.8/100
- Best for Families / Childrennot ranked
- 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
Four-dentist practice three minutes from Tenjin subway station, in its fourth generation and dating its establishment to 1903. It concentrates on implantology, bone grafting and orthodontics, publishes an itemised self-pay price list, documents a wide-field KaVo cone-beam CT and a 3D facial scanner, and takes English-language bookings over WhatsApp.
Strengths
- Information Transparency: 20 of 20 points.
- Medical Infrastructure: 12 of 15 points.
- AI & Search Visibility: 9 of 10 points.
- No red flags identified in public sources.
Weaknesses
No category fell below the weakness threshold (50% of verifiable points).
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
20 / 20
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 Four dentists named on the clinic's own staff page: 山道 信之 (Nobuyuki Yamamichi, romanisation published by the clinic), 山道 研介, 山道 美季 and 浦田 亜希, plus a dental technician and a plastic surgeon. No romanisation is published for the other three. [s2] | 3/3 |
| ✓ | Dentist specializations listed 山道 信之: 歯学博士, instructor of the Kinmirai Osteo-Implant Society, ~40 years of implant practice. 山道 研介: 歯学博士, 日本歯周病学会 専門医, デジタル矯正学会 認定医. [s2] [s3] | 2/2 |
| ✓ | Real clinic photos Own photographs of the premises and equipment on the facilities page. [s4] | 2/2 |
| ✓ | Service list published [s1] | 3/3 |
| ✓ | Clear contact details Address, freephone booking line and station route on the clinic's own access page; the landline in the Kyushu Regional Bureau register entry is 092-741-1655. [s5] | 2/2 |
| ✓ | English website version [s6] | 2/2 |
| ✓ | Address and map published [s5] | 2/2 |
Price Transparency
11 / 15
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
| ✓ | Prices or price ranges published Standing itemised price list (費用・値段表) across implants, orthodontics, ceramics and general treatment; not a time-limited offer. [s7] | 3/3 |
| ? | Cleaning price listed | 0/2 |
| ? | Filling price listed | 0/2 |
| ✓ | Crown price listed Ceramic restoration prices published in the 143,000-165,000 yen band, with smaller restorations at 49,500-71,500 yen. [s7] | 2/2 |
| ✓ | Implant price listed Implant items published from about 330,000 yen, with separate line items for the surgical and prosthetic stages. [s7] | 2/2 |
| ✓ | Consultation price listed Orthodontic precision diagnosis (CT, 3D facial scan, intraoral scan and cephalometric analysis) 38,500 yen. [s7] | 2/2 |
| ✓ | X-ray / imaging price listed Imaging is priced as part of the 38,500 yen orthodontic diagnostic package (CT plus cephalometric analysis); no separate single-film tariff is published. [s7] | 2/2 |
Reputation & Reviews
15.5 / 20
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) Star histogram read live on 2026-09-06 from the place page: 53 five-star, 2 four-star, 3 three-star, 1 two-star, 1 one-star. The buckets sum to 60, matching the 60 in the place-page header exactly, and the weighted mean 4.750 reproduces the published 4.8. [gmp1] | 5/6 |
| ◐ | Google review volume Read live on 2026-09-06 from the place-page header; the star histogram sums to the same figure. [gmp1] | 1.5/3 |
| ✓ | Review recency The newest review visible is 3 months old, which proves the within-3-months bucket and no better. Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. The Newest sort does not open to the extension (re-tested on this run by opening the Reviews tab and scrolling the panel, which returned the same three reviews), so no fresher slice is available. [gmp1] | 3/3 |
| ✓ | Clinic responds to reviews The owner replied to all three reviews Google renders. Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. The Newest sort does not open to the extension (re-tested on this run by opening the Reviews tab and scrolling the panel, which returned the same three reviews), so no fresher slice is available. [gmp1] | 2/2 |
| ✓ | No recurring complaints No review in the visible sample is critical; the histogram carries two ratings of two stars or below in 60 (3 per cent). Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. The Newest sort does not open to the extension (re-tested on this run by opening the Reviews tab and scrolling the panel, which returned the same three reviews), so no fresher slice is available. [gmp1] | 2/2 |
| ✓ | No suspicious review patterns Histogram shape, spread of wording and dates, and reviewer-account variety show no sign of manipulation. Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. The Newest sort does not open to the extension (re-tested on this run by opening the Reviews tab and scrolling the panel, which returned the same three reviews), so no fresher slice is available. [gmp1] | 2/2 |
| ✗ | Active Facebook presence No Facebook page linked from the clinic's site. [s1] | 0/1 |
| ? | TripAdvisor presence | 0/0.5 |
| ? | Other review platforms | 0/0.5 |
Medical Infrastructure
12 / 15
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ✓ | On-site X-ray [s4] | 2/2 |
| ✓ | CBCT (3D imaging) KaVo OP 3D Vision V17 cone-beam CT covering head to airway, plus a 3D facial scanner, documented on the facilities page. [s4] | 2/2 |
| ✓ | Implantology [s1] [s7] | 2/2 |
| ✓ | Orthodontics Adult, child, surgical, lingual, Gummetal and Invisalign treatment, each with published prices. [s1] [s7] | 2/2 |
| ✓ | Oral surgery Oral surgery and wisdom-tooth treatment; 歯科口腔外科 is also a declared specialty in the register entry. [s1] [reg1] | 2/2 |
| ? | Pediatric dentistry | 0/1.5 |
| ? | Emergency care | 0/1.5 |
| ✓ | Works with international patients English-language section with treatment explanations in English and reservations by WhatsApp for first and returning visits. [s6] | 2/2 |
Communication & Service
7 / 10
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✓ | WhatsApp / LINE available WhatsApp reservation link published on the clinic's English page. [s6] | 2/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken [s6] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible The English page invites questions and bookings over WhatsApp before a first visit. [s6] | 1.5/1.5 |
| ✓ | Clear service explanations Each priced item carries an explanation of what the procedure is and why it is used. [s7] | 1/1 |
| ? | Convenient opening hours | 0/1.5 |
AI & Search Visibility
9 / 10
Whether the clinic is discoverable when patients search - including via AI assistants. Checked with fixed queries: "best dentist Japan", "English speaking dentist Japan", "dental implants Japan", "emergency dentist Japan", "Japan dental clinic for expats".
| ✓ | Mentioned for: best dentist Japan WebSearch 2026-09-06: named and described ("located in Tenjin, central area of Fukuoka, just 4 minutes from the subway exit...English-language consultations...reservations in English on WhatsApp") in the answer for "best dentist Fukuoka", citing its own site yamamichi.co.jp/English/. [q1] | 1/1 |
| ✓ | Mentioned for: English speaking dentist Japan [sq1] | 1/1 |
| ✓ | Mentioned for: dental implants Japan WebSearch 2026-09-06: named and described ("Dr. Nobuyuki Yamamichi has written books about bone regeneration surgery, sinus floor elevation and dental implants, and is a Diplomate of The International Congress of Oral Implantologists") in the answer for "dental implants Fukuoka", citing its own site yamamichi.co.jp/English/. [q2] | 1/1 |
| ✗ | Mentioned for: emergency dentist Japan WebSearch 2026-09-06: not among results for "emergency dentist Fukuoka" (named results were Hakata Chuo Dental Clinic, Yasumasu Dental Office, Tomo Dental Clinic, Yoshizuka Hamai Dental Clinic, and matsuura-endodontics-fukuoka's own page). [q3] | 0/1 |
| ✓ | Mentioned for: Japan dental clinic for expats WebSearch 2026-09-06: named first and described in detail (established 1903, Tenjin location, WhatsApp support) in the answer for "Fukuoka dental clinic for expats", citing its own site yamamichi.co.jp/English/. [q4] | 1/1 |
| ✓ | Structured data on website The home page serves two JSON-LD blocks: a BreadcrumbList/CollectionPage/WebSite @graph and a standalone schema.org Dentist node (also typed LocalBusiness) with the clinic name, PostalAddress, GeoCoordinates 33.592234 / 130.395337, telephone and opening hours. [s1] | 1.5/1.5 |
| ✓ | Google indexing quality yamamichi.co.jp holds 5 of 9 results (feature, perio, aesthetic, homepage, access) despite a health-ministry registry and Wikipedia entries ranking above (WebSearch 2026-09-07) [giq1] | 2/2 |
| ✓ | Dedicated service pages Separate pages per treatment and per appliance type, each with its own FAQ and price page. [s1] | 1.5/1.5 |
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: 医療機関コード 103,165,3 — designated health-insurance dental clinic (保険医療機関), designated 1998-12-09. Operator and responsible dentist (開設者・管理者): 山道 信之. Declared specialties 歯科・歯科口腔外科・矯正歯科. Per the Kyushu Regional Bureau of Health and Welfare institution list, snapshot of 2026-08-01. The clinic is separately recorded in the national medical-institution register (医療情報ネット) as 山道歯科医院, English transliteration Yamamichi Dental Clinic, in the open-data release of 2025-12-01. [reg1] [od1]
Dentists & professional licences
| Dentist | Specialization | Licence No. |
|---|---|---|
| 山道 信之 (Nobuyuki Yamamichi) [s2] [reg2] [reg1] | 院長 / 理事長 and the clinic's 管理者; 歯学博士; instructor of the Kinmirai Osteo-Implant Society; Kanagawa Dental University 1972; former visiting lecturer, Kanagawa Dental University, and clinical professor, Taipei Medical University | Registered 歯科医師 — MHLW 医師等資格確認検索, year of registration 昭和47年 (1972). The register publishes no registration number. |
| 山道 研介 [s2] [s3] [reg2] | 副医院長 (deputy director; the clinic's greeting page signs him as 院長); 歯学博士; 日本歯周病学会 専門医; デジタル矯正学会 認定医; Matsumoto Dental University 2012, Kyushu University graduate school 2017 | Registered 歯科医師 — MHLW 医師等資格確認検索, year of registration 平成24年 (2012). The register publishes no registration number. |
| 山道 美季 [s2] [reg2] | 歯科医師 | Registered 歯科医師 — MHLW 医師等資格確認検索, year of registration 平成27年 (2015). The register publishes no registration number. |
| 浦田 亜希 [s2] [reg2] | 歯科医師 | Registered 歯科医師 — MHLW 医師等資格確認検索, year of registration 平成28年 (2016). The register publishes no registration number. |
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Price Transparency: Cleaning price listed
- Price Transparency: Filling price listed
- Reputation & Reviews: TripAdvisor presence
- Reputation & Reviews: Other review platforms
- Medical Infrastructure: Pediatric dentistry
- Medical Infrastructure: Emergency care
- Communication & Service: Response speed
- Communication & Service: Convenient opening hours
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://yamamichi.co.jp/ |
|---|---|
| Phone | +81 92-741-1655 |
| https://api.whatsapp.com/message/G4TFTCA4Y3Y4O1 | |
| Google Maps | Map listing |
| Address | 3-5-13 Tenjin, Chuo-ku, Fukuoka 810-0001, Japan (1F/2F) |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://yamamichi.co.jp/ | Clinic name, service list, site structure, structured-data check | 2026-09-04 |
| s2 | https://yamamichi.co.jp/staff/ | Named dentists, roles, qualifications and career histories | 2026-09-04 |
| s3 | https://yamamichi.co.jp/director/ | Director's greeting, qualifications and overseas training | 2026-09-04 |
| s4 | https://yamamichi.co.jp/equipment/ | KaVo OP 3D Vision V17 cone-beam CT, 3D facial scanner, surgical sterilisation regime, premises photographs | 2026-09-04 |
| s5 | https://yamamichi.co.jp/access/ | Address, booking line, station route and embedded Google Maps place reference | 2026-09-04 |
| s6 | https://yamamichi.co.jp/English/ | English-language section, establishment year 1903, English consultation and WhatsApp reservation | 2026-09-04 |
| s7 | https://yamamichi.co.jp/cost/ | Itemised self-pay price list for implants, orthodontics, ceramics and diagnostics | 2026-09-04 |
| reg1 | https://kouseikyoku.mhlw.go.jp/kyushu/gyomu/gyomu/hoken_kikan/index… | Kyushu Regional Bureau of Health and Welfare コード内容別医療機関一覧表, Fukuoka Prefecture dental workbook (r8_08_shika_fukuoka_02.xlsx), snapshot 2026-08-01: entry 642, 医療機関コード 103,165,3, operator, responsible dentist, designation date and declared specialties | 2026-09-04 |
| reg2 | https://licenseif.mhlw.go.jp/search_isei/jsp/top.jsp | MHLW 医師等資格確認検索 (national dentist register), full-name searches for the four named dentists; register data as of 2026-09-04 | 2026-09-04 |
| od1 | https://data.e-gov.go.jp/data/dataset/iryou_teikyouseido_mhlw | MHLW 医療情報ネット open data, 03-1_dental_facility_info_20251201.csv, snapshot 2025-12-01, record 4030001031653: official name, address, English transliteration and coordinates 33.592207 / 130.395354 | 2026-09-04 |
| sq1 | search:English speaking dentist Fukuoka dental clinic | AI/search visibility scout 2026-09-04 — clinic named first in the answer and in the cited English-friendly dentist listings | 2026-09-04 |
| gmp1 | https://www.google.com/maps/place/Yamamichi+Dental+Clinic/@33.59222… | Live Google Maps place page read in a browser: rating, review count, star histogram, review dates, owner replies, listing website, phone, address and pin coordinates | 2026-09-06 |
| q1 | search:best dentist Fukuoka | AI/search visibility scout — canonical query | 2026-09-06 |
| q2 | search:dental implants Fukuoka | AI/search visibility scout — canonical query | 2026-09-06 |
| q3 | search:emergency dentist Fukuoka | AI/search visibility scout — canonical query | 2026-09-06 |
| q4 | search:Fukuoka dental clinic for expats | AI/search visibility scout — canonical query | 2026-09-06 |
| giq1 | search:山道歯科 福岡 Yamamichi Dental Fukuoka | yamamichi.co.jp holds 5 of 9 results (feature, perio, aesthetic, homepage, access) despite a health-ministry registry and Wikipedia entries ranking above | 2026-09-07 |
Change History
| Date | Change |
|---|---|
| 2026-09-06 | Combined browser pass (agent I-3, korea + japan): the Google Maps place page was opened in a real browser and read for rating, review count, star histogram, review recency, owner replies, complaint and manipulation reading, listing website, phone, address and pin coordinates; the country worklist rows that needed a rendering browser were worked through on the clinic's own channels. |
| 2026-09-04 | Adversarial verification pass 2026-09-04: the Kyushu Regional Bureau workbook re-downloaded (令和8年8月1日現在 is still the newest release) and re-read to the last of its 2,937 rows, entry 642 (医療機関コード 103,165,3, 指定 平10.12.9, 開設者・管理者 山道 信之) reproduced exactly; all four dentist register entries reproduced live; the open-data coordinates corroborated to within about 3 m by the clinic's own schema.org GeoCoordinates; the structured-data reading corrected. |
| 2026-09-04 | Initial data collection for the Japan Dental Transparency & Trust Index: verified against the clinic's own site, the Kyushu Regional Bureau of Health and Welfare health-insurance institution list (snapshot 2026-08-01), the MHLW national dentist register and the MHLW medical-institution open data (snapshot 2025-12-01). |
A question or a correction?
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