吉塚はまい歯科 (Yoshizuka Hamai Dental Clinic)
According to our open methodology, this clinic scored 55.6/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #14 of 21 ranked clinics · Last checked: 6 September 2026
55.6/100
Positions by Rating Profile
- Overall Transparency & Trust#1455.6/100
- Best for Expats#1258.8/100
- Best for Dental Implantsnot ranked
- Best for Emergency Dental Care#561/100
- Best Price Transparency#1738.5/100
- Best English-speaking Clinics#1264/100
- Best for Families / Children#1060.5/100
- 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
Single-dentist practice by Yoshizuka station, open since February 2024, offering consultation in Japanese, English and Chinese after its founder spent three years working in Zhejiang. It runs on national health insurance, publishes English and Chinese guides, a LINE patient card and a WeChat contact, and documents its accepted facility standards for infection control and medical safety; it publishes no prices.
Strengths
- Information Transparency: 16 of 20 points.
- Communication & Service: 8.5 of 10 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 13 verifiable points (missing: prices or price ranges published; cleaning price listed; filling price listed; crown 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
16 / 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 Director Masaaki Hamai, whose romanisation is published by the clinic and matches the katakana reading HAMAI MASAAKI recorded in the national medical-institution register. He is the only dentist named. [s2] | 3/3 |
| ✗ | Dentist specializations listed The director's page gives a full career history (Kyushu Dental University 2010, clinics in Ube and Ningbo) but states no certification or specialist title. [s2] | 0/2 |
| ? | Real clinic photos | 0/2 |
| ✓ | Service list published [s1] | 3/3 |
| ✓ | Clear contact details Phone, address, e-mail, LINE and WeChat contact published by the clinic; the phone matches the Kyushu Regional Bureau register entry. [s1] | 2/2 |
| ✓ | English website version Dedicated English guide page, with a parallel Chinese guide. [s3] | 2/2 |
| ✓ | Address and map published [s3] | 2/2 |
Price Transparency
0 / 15
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
| ✗ | Prices or price ranges published No price page and no figure on any treatment, clinic or guide page. [s1] [s3] [s4] [s5] | 0/3 |
| ✗ | Cleaning price listed [s5] | 0/2 |
| ✗ | Filling price listed [s5] | 0/2 |
| ✗ | Crown price listed [s5] | 0/2 |
| ? | Implant price listed | 0/2 |
| ✗ | Consultation price listed [s3] | 0/2 |
| ✗ | X-ray / imaging price listed [s5] | 0/2 |
Reputation & Reviews
11 / 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: 21 five-star, 0 four-star, 0 three-star, 0 two-star, 0 one-star. The buckets sum to 21, matching the 21 in the place-page header exactly, and the weighted mean 5.000 reproduces the published 5. [gmp1] | 4/6 |
| ◐ | Google review volume Read live on 2026-09-06 from the place-page header; the star histogram sums to the same figure. [gmp1] | 1/3 |
| ✗ | Review recency Newest Google review is dated 2025-09-25 (listing read 2026-09-26). [yoshizuka-hamai-dental-fukuoka-gbp-2026-09-26] | 0/3 |
| ✓ | 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. A newest-first sort was not available; re-checking the Reviews tab returned the same three reviews, so no fresher slice is available. [gmp1] | 2/2 |
| ✓ | No recurring complaints The base carries no rating below five stars at all and no critical review is visible. Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. A newest-first sort was not available; re-checking the Reviews tab returned the same three reviews, so no fresher slice is available. [gmp1] | 2/2 |
| ✓ | No suspicious review patterns A clean 21/0/0/0/0 wall was examined rather than assumed. Against manipulation: the practice opened in February 2024, so 21 reviews over about two and a half years is an ordinary rate rather than a burst; the three visible reviews are long and describe different things (missing teeth and embarrassment, a previous dentist who treated without explanation, LINE booking and card payment); their authors hold 5, 2 and 10 reviews; and the owner answers each one. Nothing establishes manipulation, and a small unbroken five-star base is not itself evidence of it. The shape is recorded here so the gate can weigh it. Sample: the 3 reviews Google Maps renders on the place page in its own relevance order. A newest-first sort was not available; re-checking the Reviews tab returned the same three reviews, so no fresher slice is available. [gmp1] | 2/2 |
| ? | Active Facebook presence Not established: the clinic's website (26 pages read 2026-10-02) links no Facebook page and none was found under its website or Instagram name; Facebook itself could not be searched that day. | 0/1 |
| ✗ | TripAdvisor presence No TripAdvisor listing found via its search for "Yoshizuka Hamai Dental Clinic" and "Hamai Dental"; the clinic's site does not link to TripAdvisor (checked 2026-10-05). [yoshizuka-hamai-dental-fukuoka-tripadvisor] [yoshizuka-hamai-dental-fukuoka-tripadvisor-2] | 0/0.5 |
| ✗ | Other review platforms No review profile on the Japanese review sites: Caloo and EPARK Dental list it only from public data, with no review, and WhatClinic has no page for it (checked 2026-10-02). [yoshizuka-hamai-dental-fukuoka-presence] [yoshizuka-hamai-dental-fukuoka-presence-2] [yoshizuka-hamai-dental-fukuoka-presence-3] | 0/0.5 |
Medical Infrastructure
9 / 15
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ? | On-site X-ray | 0/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✗ | Implantology Implants appear nowhere in the clinic's published treatment list (caries, periodontal, root canal, prevention, crowns and bridges, dentures, wisdom teeth, TMJ, children's orthodontics, direct bonding, whitening, botulinum, aligners). [s5] | 0/2 |
| ✓ | Orthodontics Children's orthodontics and clear aligners; orthodontics (kyosei shika) is a declared specialty in the register entry. [s5] [reg1] | 2/2 |
| ✓ | Oral surgery Wisdom-tooth treatment; oral surgery (shika koku geka) is a declared specialty in the register entry. [s5] [reg1] | 2/2 |
| ✓ | Pediatric dentistry [s5] [reg1] | 1.5/1.5 |
| ✓ | Emergency care The English guide states the clinic offers treatment "from preventative to emergency care". [s3] | 1.5/1.5 |
| ✓ | Works with international patients The clinic was founded specifically to serve foreign patients and offers service in English, Japanese or Chinese; it also publishes a Chinese guide and a WeChat contact. [s3] | 2/2 |
Communication & Service
8.5 / 10
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ✓ | WhatsApp / LINE available Official LINE account used as booking channel, pre-visit questionnaire and digital patient card. [s1] | 2/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken [s3] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible LINE registration allows booking and completion of the pre-visit questionnaire before attending. [s1] | 1.5/1.5 |
| ✓ | Clear service explanations [s5] | 1/1 |
| ✓ | Convenient opening hours Saturdays 8:30-14:00 in addition to weekday sessions 9:00-13:00 and 14:00-18:00; closed Monday, Sunday and public holidays. The English guide's sentence "open from 8:30 am on everyday except Tuesday" contradicts the clinic's own timetable, which shows Monday as the closed day. [s3] | 1.5/1.5 |
AI & Search Visibility
5.5 / 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 Web search 2026-09-06: not among results for "best dentist Fukuoka" (named results were Shinozaki Dental Clinic, Hakata Chuo Dental Clinic, ALLON4 ZYGOMA Clinic, Yamamichi Dental Clinic). [q1] | 0/1 |
| ✓ | Mentioned for: English speaking dentist Japan [sq1] | 1/1 |
| ✗ | Mentioned for: dental implants Japan Web search 2026-09-06: not among results for "dental implants Fukuoka" (named results were Fukuoka Dental College Hospital, ALLON4 ZYGOMA Clinic, Yamamichi Dental Clinic, Kasuga Dental Clinic, Hakata Chuo Dental Clinic, Hachishika Clinic). [q2] | 0/1 |
| ✓ | Mentioned for: emergency dentist Japan Web search 2026-09-06: named and described ("Offers a wide range of dental treatments, from preventative to emergency care. Service is available in English, Japanese, or Chinese") in the answer for "emergency dentist Fukuoka", citing its own site yoshizuka-hamai-dental.com/english-guide/. [q3] | 1/1 |
| ✗ | Mentioned for: Japan dental clinic for expats Web search 2026-09-06: not among results for "Fukuoka dental clinic for expats" (named results were Yamamichi Dental Clinic, Tomo Dental Clinic, Yasumasu Dental Office). [q4] | 0/1 |
| ✗ | Structured data on website No schema.org JSON-LD block in the page source. [s1] | 0/1.5 |
| ✓ | Google indexing quality own domain yoshizuka-hamai-dental.com holds 6 of 12 results including the top one (homepage, English guide, access, clinic, dentist, treatment pages), ahead of Instagram, Doctors File, the health ministry entry and Caloo (web search 2026-09-07) [giq1] | 2/2 |
| ✓ | Dedicated service pages Treatment pages grouped into adult, children's and cosmetic categories with a page per procedure. [s5] | 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: Institution code 023,160,1 — designated health-insurance dental clinic, designated 2024-02-01. Operator and responsible dentist: Masaaki Hamai. Declared specialties: dentistry, paediatric dentistry, orthodontics, oral and maxillofacial surgery. Per the Kyushu Regional Bureau of Health and Welfare institution list, snapshot of 2026-08-01; independently recorded in the national medical-institution register, MHLW Healthcare Information Net (facility 40 / dental clinic / 3400000098) with the same operator and responsible dentist, record last updated 2026-01-29. [reg1] [reg3]
Dentists & MHLW register entry
| Dentist | Specialization | MHLW entry | Notes |
|---|---|---|---|
| 濵井 祐昭 (Masaaki Hamai) [s2] [reg2] [reg1] | Director and the clinic's responsible dentist; Kyushu Dental University 2010, residency at its affiliated hospital; practised in Ube and in Ningbo, Zhejiang; speaks Japanese, English and Chinese | not published | Confirmed on the public register of 厚生労働省; registered since 2010, no licence number is published. |
Red Flags
No red flags identified in the public sources we reviewed.
Data We Could Not Verify
- Information Transparency: Real clinic photos
- Price Transparency: Implant price listed
- Reputation & Reviews: Active Facebook presence
- Medical Infrastructure: On-site X-ray
- Medical Infrastructure: CBCT (3D imaging)
- Communication & Service: Response speed
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://yoshizuka-hamai-dental.com/ |
|---|---|
| Phone | +81 50-3613-3576 |
| LINE | https://line.me/R/ti/p/@765neurp |
| Google Maps | Map listing |
| Address | 2-1-9 Yoshizuka, Hakata-ku, Fukuoka 812-0041, Japan (Mont Bell Yoshizuka 1F) |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://yoshizuka-hamai-dental.com/ | Clinic name, contacts, LINE and Instagram channels, service list, structured-data check | 2026-09-04 |
| s2 | https://yoshizuka-hamai-dental.com/dentist/ | Director's name with published romanisation and career history | 2026-09-04 |
| s3 | https://yoshizuka-hamai-dental.com/english-guide/ | English guide: multilingual service statement, emergency care, insurance, address, hours and parking | 2026-09-04 |
| s4 | https://yoshizuka-hamai-dental.com/clinic/ | Accepted facility standards for infection control, medical safety (AED, pulse oximeter, oxygen, resuscitation set) and prosthetic-technician collaboration | 2026-09-04 |
| s5 | https://yoshizuka-hamai-dental.com/treatment/ | Published treatment list across adult, children's and cosmetic categories; absence of prices | 2026-09-04 |
| reg1 | https://kouseikyoku.mhlw.go.jp/kyushu/gyomu/gyomu/hoken_kikan/index… | Kyushu Regional Bureau of Health and Welfare medical-institution code roster, Fukuoka Prefecture dental workbook (r8_08_shika_fukuoka_02.xlsx), snapshot 2026-08-01: entry 109, institution code 023,160,1, operator, responsible dentist, designation date and declared specialties | 2026-09-04 |
| reg2 | https://licenseif.mhlw.go.jp/search_isei/jsp/top.jsp | MHLW physician/dentist qualification confirmation search (national dentist register), full-name search for Masaaki Hamai; register data as of 2026-09-04 | 2026-09-04 |
| reg3 | https://www.iryou.teikyouseido.mhlw.go.jp/znk-web/juminkanja/S2430/… | MHLW Healthcare Information Net detail record: official name, address, operator and responsible dentist Masaaki Hamai (reading confirmed in the register as Hamai Masaaki), record last updated 2026-01-29 | 2026-09-04 |
| sq1 | search:English speaking dentist Fukuoka dental clinic | AI/search visibility scout 2026-09-04 — clinic named in the answer as offering service in English, Japanese or Chinese | 2026-09-04 |
| gmp1 | https://www.google.com/maps/place/Yoshizukahamai+Dental+Clinic/@33.… | 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:吉塚はまい歯科 福岡 Yoshizuka Hamai Dental Clinic | own domain yoshizuka-hamai-dental.com holds 6 of 12 results including the top one (homepage, English guide, access, clinic, dentist, treatment pages), ahead of Instagram, Doctors File, the health ministry entry and Caloo | 2026-09-07 |
| yoshizuka-hamai-dental-fukuoka-gbp-2026-09-26 | https://www.google.com/maps?cid=1870935473042746733&hl=en | Google listing read on 2026-09-26: rating 5 from 21 reviews; star histogram 1★ 0 / 2★ 0 / 3★ 0 / 4★ 0 / 5★ 21; newest review dated 2025-09-25; 3 of the 5 newest reviews carry an owner reply, latest dated 2025-09-26. | 2026-09-26 |
| yoshizuka-hamai-dental-fukuoka-presence | https://caloo.jp/hospitals/detail/4400002364 | Caloo page for Yoshizuka Hamai Dental Clinic, Mont Bell Yoshizuka 1F, 2-1-9 Yoshizuka, Hakata-ku, Fukuoka, read 2026-10-02: the public-register entry with no review (0 reviews) | 2026-10-02 |
| yoshizuka-hamai-dental-fukuoka-presence-2 | https://haisha-yoyaku.jp/bun2sdental/detail/index/id/z200015294/ | EPARK Dental page for Yoshizuka Hamai Dental Clinic, 2-1-9 Yoshizuka, Hakata-ku, Fukuoka, read 2026-10-02: a page built from public data with a listing-request control and no review; the clinic does not take bookings through EPARK | 2026-10-02 |
| yoshizuka-hamai-dental-fukuoka-presence-3 | https://www.whatclinic.com/dentists/japan/fukuoka | WhatClinic catalog of dentists in Fukuoka read page by page on 2026-10-02 (2 listings on 1 page) and checked against the WhatClinic sitemap (2 Fukuoka profiles), addresses compared: no profile of the clinic; direct profile addresses for its name (yoshizuka-hamai-dental-clinic, hamai-dental-clinic) return 404 | 2026-10-02 |
| yoshizuka-hamai-dental-fukuoka-tripadvisor | https://www.tripadvisor.com/TypeAheadJson?action=API&details=true&q… | TripAdvisor's own search, read 2026-10-05: 12 suggestions for "Yoshizuka Hamai Dental Clinic" (5 attractions, 6 hotels, 1 restaurant), none of them a dental practice in or near Fukuoka; 12 suggestions for "Hamai Dental" (5 attractions, 5 hotels, 2 restaurants), none of them a dental practice in or near Fukuoka; no listing for this clinic | 2026-10-05 |
| yoshizuka-hamai-dental-fukuoka-tripadvisor-2 | https://yoshizuka-hamai-dental.com/ | 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 | Presence re-checked: presence on other review platforms — no. |
| 2026-09-29 | Corrected 2026-09-29: active Facebook presence now unverified: no Facebook search is on record, so the absence of a page is not established; review recency older than a year (newest review dated 2025-09-25). |
| 2026-09-06 | Checked by hand in a browser: 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 checks 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 entry 109 (institution code 023,160,1, designated Reiwa 6.2.1 = 2024-02-01) and the Iryo Joho Net detail record reproduced live; the register entry re-checked under both the traditional and the standard kanji for the Hama of Hamai; the clinic-published romanisation Yoshizuka Hamai Dental Clinic confirmed on its own English guide; geo left null — the clinic is absent from the 2025-12-01 open-data release and publishes no map pin (queued for a manual browser check). |
| 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 medical-institution register Iryo Joho Net and the MHLW national dentist register. |
A question or a correction?
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