山手デンタルクリニック (Yamate Dental Clinic)
According to our open methodology, this clinic scored 47.8/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #20 of 21 ranked clinics · Last checked: 6 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#2047.8/100
- Best for Expats#2145.5/100
- Best for Dental Implants#1542.5/100
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#2033.4/100
- Best English-speaking Clinics#1949.8/100
- Best for Families / Children#1148.1/100
- 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
Long-standing Nakameguro practice opened in 1997 by Dr. Nagisa Arai, who is certified by the Japanese Orthodontic Society and the Japanese Society of Adult Dental Orthodontics and holds memberships in several international orthodontic bodies. The site is organised around patient situations — children, pregnancy, orthodontics, laser treatment, dentures, implants, home visits, second opinions, snoring, metal allergy, dry mouth, halitosis and patients with disabilities — and includes an English guide page written for foreign patients. The equipment page documents digital radiography, two laser wavelengths and a Sirona instrument washer-steriliser, but no cone-beam CT; no fees are published anywhere on the site.
Strengths
- Information Transparency: 20 of 20 points.
- No red flags identified in public sources.
Weaknesses
- Price Transparency: 0 of 3 verifiable points (missing: prices or price ranges published)
- Reputation & Reviews: 4 of 15 verifiable points (missing: review recency; tripAdvisor presence)
- AI & Search Visibility: 4.5 of 10 verifiable points (missing: mentioned for: best dentist Japan; mentioned for: English speaking dentist Japan; mentioned for: dental implants Japan; mentioned for: emergency dentist Japan; structured data on website)
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 Confirmed and completed in a rendering browser on 2026-09-06. /modules/staff/index.php?content_id=2 is public and names the principal, in kanji, with the title incho (director) and a full biography. The record's question was whether any other dentist is published: no. content_id=1, the general "Doctors and Staff" list, redirects a real browser to the site's login form (user.php) exactly as it does a scripted fetch, and the two other public pages that could carry a roster - the "About the Clinic" page and the standalone English guide, both read in full - contain no dentist name at all, not even the principal's. The site does advertise a vacancy for a part-time dentist, so other dentists may practise there, but the clinic does not publish them. [s2] [s3] | 3/3 |
| ✓ | Dentist specializations listed Japanese Orthodontic Society certified orthodontist, Japanese Society of Adult Orthodontics certified orthodontist; member of the Japanese Society of Pediatric Dentistry, the European and Spanish orthodontic societies and the World Federation of Orthodontists. [s2] | 2/2 |
| ✓ | Real clinic photos [s5] | 2/2 |
| ✓ | Service list published Per-treatment pages: general, paediatric, maternity, aesthetic, orthodontics, laser, dentures, implants, check-ups, home visits, second opinion, snoring, metal allergy, dry mouth, halitosis and care for patients with disabilities. [s1] | 3/3 |
| ✓ | Clear contact details [s1] | 2/2 |
| ✓ | English website version Standalone English guide page covering general treatment, orthodontics and the treatment flow. [s3] | 2/2 |
| ✓ | Address and map published [s1] | 2/2 |
Price Transparency
Whether patients can estimate costs before visiting. Published price ranges count; exact prices are not required.
| ✗ | Prices or price ranges published The complete page list contains no fee page and no figures; the site states only that credit cards and a dental loan are accepted. [s1] [s4] | 0/3 |
| ? | Cleaning price listed | 0/2 |
| ? | Filling price listed | 0/2 |
| ? | Crown price listed | 0/2 |
| ? | Implant price listed | 0/2 |
| ? | Consultation price listed | 0/2 |
| ? | X-ray / imaging price listed | 0/2 |
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) Star histogram read live on 2026-09-06 from the place page: 9 five-star, 0 four-star, 0 three-star, 1 two-star, 4 one-star. The buckets sum to 14, matching the 14 in the place-page header exactly, and the weighted mean 3.643 reproduces the published 3.6. [gmp1] | 1/6 |
| ◐ | Google review volume Read live on 2026-09-06 from the place-page header; the star histogram sums to the same figure. [gmp1] | 0.5/3 |
| ✗ | Review recency Newest Google review is dated 2023-07-26 (listing read 2026-09-26). [yamate-dental-clinic-meguro-tokyo-gbp-2026-09-26] | 0/3 |
| ? | Clinic responds to reviews | 0/2 |
| ? | No recurring complaints Deliberately left unknown. Five of the fourteen ratings - 36 per cent of the base, the highest negative share in either country - are one-star or two-star, so recording 'no recurring complaints' as false would credit a clean record the distribution contradicts. But all three reviews Google renders are five-star, so not a single negative is readable and no theme can be demonstrated either. Neither value is honest, and the field stays null with the reasoning here. 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. | 0/2 |
| ✓ | No suspicious review patterns The 9/0/0/1/4 shape is a small, sharply divided base rather than a manipulation signature. 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 (24 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 "Yamate Dental Clinic Meguro" and "Yamate Dental"; the clinic's site does not link to TripAdvisor (checked 2026-10-05). [yamate-dental-clinic-meguro-tokyo-tripadvisor] [yamate-dental-clinic-meguro-tokyo-tripadvisor-2] | 0/0.5 |
| ✓ | Other review platforms Reviewed on Caloo, the Japanese clinic-review site: 2 member reviews (average 3.36, newest September 2016). [yamate-dental-clinic-meguro-tokyo-presence] | 0.5/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ✓ | On-site X-ray Digital X-ray listed on the equipment page. [s4] | 2/2 |
| ✗ | CBCT (3D imaging) The equipment page lists digital radiography, lasers and sterilisation equipment; no cone-beam CT. [s4] | 0/2 |
| ✓ | Implantology [s1] | 2/2 |
| ✓ | Orthodontics [s1] [s2] | 2/2 |
| ? | Oral surgery | 0/2 |
| ✓ | Pediatric dentistry [s1] | 1.5/1.5 |
| ? | Emergency care | 0/1.5 |
| ✓ | Works with international patients English guide page addressed to foreign patients. [s3] | 2/2 |
Communication & Service
How easy it is to contact the clinic, get answers, and book - especially for international patients.
| ? | WhatsApp / LINE available | 0/2 |
| ? | Response speed | 0/1.5 |
| ✓ | English spoken English guide page written in the clinic's own voice. [s3] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible Online booking and enquiry forms; a second-opinion consultation page. [s1] | 1.5/1.5 |
| ✓ | Clear service explanations [s1] | 1/1 |
| ✗ | Convenient opening hours 09:30-13:00 and 14:30-18:00, Saturdays morning only; closed Wednesdays, Sundays and public holidays — no evening or full-weekend cover. [s1] | 0/1.5 |
AI & Search Visibility
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 [q1] | 0/1 |
| ✗ | Mentioned for: English speaking dentist Japan [q2] | 0/1 |
| ✗ | Mentioned for: dental implants Japan [q3] | 0/1 |
| ✗ | Mentioned for: emergency dentist Japan [q4] | 0/1 |
| ✓ | Mentioned for: Japan dental clinic for expats [q5] | 1/1 |
| ✗ | Structured data on website No JSON-LD or microdata found in the served HTML. [s1] | 0/1.5 |
| ✓ | Google indexing quality own domain yamate-d.com takes the top two results plus its English and mobile pages (4 of 12) despite heavy dilution from three unrelated Tokyo practices with similar names (Yamate-dori Shika, Yamate Shika, Yamate Dental Oimachi) (web search 2026-09-07) [giq1] | 2/2 |
| ✓ | Dedicated service pages [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: Institution code 10,4632,5 — designated health-insurance dental clinic, designation date 1997-05-01, declared specialties dentistry, orthodontics and paediatric dentistry, per the Kanto-Shinetsu Regional Bureau of Health and Welfare Tokyo dental designation list as of 2026-09-01 (Reiwa 8); founder and managing dentist Nagisa Arai. Also registered as a dental clinic in the MHLW Healthcare Information Net under facility code 3132119370. [reg1] [reg4]
Dentists & MHLW register entry
| Dentist | Specialization | MHLW entry | Notes |
|---|---|---|---|
| 新井 なぎさ (Dr. Nagisa Arai) [s2] [reg3] [reg4] | Principal and managing dentist; orthodontics and paediatric dentistry, certified specialist, Japan Orthodontic Society | not published | Confirmed on the public register of 厚生労働省; registered since 1986, no licence number is published. |
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
- Price Transparency: Crown price listed
- Price Transparency: Implant price listed
- Price Transparency: Consultation price listed
- Price Transparency: X-ray / imaging price listed
- Reputation & Reviews: Clinic responds to reviews
- Reputation & Reviews: No recurring complaints
- Reputation & Reviews: Active Facebook presence
- Medical Infrastructure: Oral surgery
- Medical Infrastructure: Emergency care
- Communication & Service: WhatsApp / LINE available
- 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://www.yamate-d.com/ |
|---|---|
| Phone | +81 3-3719-6874 |
| Google Maps | Map listing |
| Address | 〒153-0061 東京都目黒区中目黒3-5-4 (3-5-4 Nakameguro, Meguro-ku, Tokyo 153-0061) |
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.yamate-d.com/ | Clinic name, contacts, opening hours, complete service page list and the absence of a fee page | 2026-09-04 |
| s2 | https://www.yamate-d.com/modules/staff/index.php?content_id=2 | Principal's name, biography and certifications | 2026-09-04 |
| s3 | https://www.yamate-d.com/english/EnglishGuide.html | English-language guide page | 2026-09-04 |
| s4 | https://www.yamate-d.com/modules/kizai/index.php?content_id=1 | Equipment: digital X-ray, lasers, sterilisation; no CBCT | 2026-09-04 |
| s5 | https://www.yamate-d.com/modules/tour/index.php?content_id=1 | Photographs of the premises | 2026-09-04 |
| reg1 | https://www.iryou.teikyouseido.mhlw.go.jp/znk-web/juminkanja/S2430/… | MHLW Healthcare Information Net (Navii) — the statutory facility register kept under Medical Care Act Article 6-3: official name, address, phone | 2026-09-04 |
| reg3 | https://licenseif.mhlw.go.jp/search_isei/jsp/top.jsp | MHLW physician/dentist qualification confirmation search (dentist register), snapshot 2026-09-04 | 2026-09-04 |
| reg4 | https://kouseikyoku.mhlw.go.jp/kantoshinetsu/chousa/shitei.html | Kanto-Shinetsu Regional Bureau of Health and Welfare Tokyo dental designation list as of 2026-09-01: institution code 10,4632,5, founder, managing dentist, declared specialties and designation date | 2026-09-04 |
| q1 | search:best dentist Tokyo | Canonical patient-visibility query, run 2026-09-04 | 2026-09-04 |
| q2 | search:English speaking dentist Tokyo | Canonical patient-visibility query, run 2026-09-04 | 2026-09-04 |
| q3 | search:dental implants Tokyo | Canonical patient-visibility query, run 2026-09-04 | 2026-09-04 |
| q4 | search:emergency dentist Tokyo | Canonical patient-visibility query, run 2026-09-04 | 2026-09-04 |
| q5 | search:Tokyo dental clinic for expats | Canonical patient-visibility query, run 2026-09-04 | 2026-09-04 |
| gmp1 | https://www.google.com/maps/place/Yamate+Dental+Clinic/@35.640535,1… | 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 |
| giq1 | search:山手デンタルクリニック 目黒 東京 Yamate Dental Clinic Meguro Tokyo | own domain yamate-d.com takes the top two results plus its English and mobile pages (4 of 12) despite heavy dilution from three unrelated Tokyo practices with similar names (Yamate-dori Shika, Yamate Shika, Yamate Dental Oimachi) | 2026-09-07 |
| yamate-dental-clinic-meguro-tokyo-gbp-2026-09-26 | https://www.google.com/maps?cid=5646865377311440159&hl=en | Google listing read on 2026-09-26: rating 3.6 from 14 reviews; star histogram 1★ 4 / 2★ 1 / 3★ 0 / 4★ 0 / 5★ 9; newest review dated 2023-07-26. | 2026-09-26 |
| yamate-dental-clinic-meguro-tokyo-presence | https://caloo.jp/hospitals/detail/3132119370 | Caloo page for Yamate Dental Clinic, 3-5-4 Nakameguro, Meguro-ku, Tokyo, phone 03-3719-6874 — the card's address and phone: 2 member reviews, average 3.36, newest posted September 2016 (read 2026-10-02) | 2026-10-02 |
| yamate-dental-clinic-meguro-tokyo-tripadvisor | https://www.tripadvisor.com/TypeAheadJson?action=API&details=true&q… | TripAdvisor's own search, read 2026-10-05: 12 suggestions for "Yamate Dental Clinic Meguro" (6 attractions, 6 hotels), none of them a dental practice in or near Tokyo; 12 suggestions for "Yamate Dental" (6 attractions, 2 hotels, 4 restaurants), none of them a dental practice in or near Tokyo; no listing for this clinic | 2026-10-05 |
| yamate-dental-clinic-meguro-tokyo-tripadvisor-2 | https://www.yamate-d.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 — yes. |
| 2026-09-29 | Corrected 2026-09-29: clinic responds to reviews now unverified: only 3 reviews were checked for owner replies; review recency older than a year (newest review dated 2023-07-26). |
| 2026-09-06 | Checked by hand in a browser: the Google Maps place page was read live for rating, review count, star histogram, review recency, owner replies, complaint and manipulation reading, listing website, phone, address and pin coordinates; the login-gated staff page was re-tested in a real browser and the clinic's other public pages searched for a roster. |
| 2026-09-04 | Adversarial verification pass 2026-09-04: geo added from the MHLW Iryo Joho Net open data (snapshot 2025-12-01, facility ID 1333132119370); the regional bureau entry (institution code 10,4632,5, designated Heisei 9.5.1 = 1997-05-01) and the principal's register entry (Showa 61 = 1986) reproduced live; the whole site navigation re-read and confirmed to contain no fee page. |
| 2026-09-04 | Initial data collection for the Japan Dental Transparency & Trust Index: verified against the clinic's own website and English guide, the Kanto-Shinetsu Regional Bureau of Health and Welfare health-insurance designation list, the MHLW Iryo Joho Net facility register and the MHLW dentist qualification search. |
A question or a correction?
Have a question, a suggestion, or a correction to this page? Get in touch — we read every message. Verified data corrections are reviewed against sources and applied with a public change-history entry.
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