みなと町歯科 (Minatomachi Dental Clinic)
According to our open methodology, this clinic scored 54.7/100 for transparency, reputation, service accessibility, and digital visibility.
Overall rank: #17 of 21 ranked clinics · Last checked: 6 September 2026
Positions by Rating Profile
- Overall Transparency & Trust#1754.7/100
- Best for Expats#1455/100
- Best for Dental Implantsnot ranked
- Best for Emergency Dental Carenot ranked
- Best Price Transparency#962.7/100
- Best English-speaking Clinics#1557/100
- 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
Small appointment-only practice five minutes from Namba station, notable in this set for running its site in four languages — Japanese, English, Chinese and Russian — and for publishing its non-insurance tariff in English, from a JPY 10,000 check-up including a panoramic X-ray and cleaning through composite fillings, inlays and endodontics. It is open seven days a week including public holidays for a morning session, offers home and care-facility visits, and states plainly that English support is conversational and Chinese runs through a telephone interpreting service. The clinic does not publish the name of its dentist anywhere on the site; the national registers record the founder and managing dentist as 三角 佐代子.
Strengths
No categories reached the strength threshold (80%).
Weaknesses
- Medical Infrastructure: 4 of 9.5 verifiable points (missing: implantology; orthodontics; pediatric dentistry)
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 The Japanese and English pages carry a biography ("歯科医師・院長", director of the Naniwa-ku dental association, Hiroshima University) but no name. The name is only recoverable from the national registers, which is not publication by the clinic. [s1] [s2] | 0/3 |
| ✗ | Dentist specializations listed Membership of the Society of Swallowing and Dysphagia of Japan is stated, but no qualification is tied to a named dentist. [s1] [s2] | 0/2 |
| ✓ | Real clinic photos [s1] | 2/2 |
| ✓ | Service list published General dentistry (caries, periodontal disease, dentures, root canals), home whitening, in-office whitening and home / care-facility visiting dentistry. [s2] [s1] | 3/3 |
| ✓ | Clear contact details Phone with reception hours, e-mail enquiry and 24-hour booking request form. [s1] | 2/2 |
| ✓ | English website version Full English page; Chinese and Russian pages as well. [s2] | 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 Non-insurance tariff published in English across check-ups, stain removal, caries treatment, inlays and endodontic work. [s2] | 3/3 |
| ✓ | Cleaning price listed Dental check-up including panoramic X-ray and teeth cleaning JPY 10,000; stain removal JPY 5,000. [s2] | 2/2 |
| ✓ | Filling price listed Composite-resin treatment per tooth JPY 5,000; metal inlay JPY 10,000-15,000; CR inlay JPY 7,000. [s2] | 2/2 |
| ? | Crown price listed | 0/2 |
| ? | Implant price listed | 0/2 |
| ✓ | Consultation price listed The JPY 10,000 check-up covers examination, panoramic X-ray and cleaning. [s2] | 2/2 |
| ✓ | X-ray / imaging price listed Panoramic X-ray is priced as part of the JPY 10,000 check-up; it is not itemised separately. [s2] | 2/2 |
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: 19 five-star, 1 four-star, 1 three-star, 0 two-star, 4 one-star. The buckets sum to 25, matching the 25 in the place-page header exactly, and the weighted mean 4.240 reproduces the published 4.2. [gmp1] | 3/6 |
| ◐ | 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 The newest of the three reviews Google renders is about a year old, which proves neither bucket, so the value is left unknown rather than guessed at 'older'. 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. | 0/3 |
| ✗ | Clinic responds to reviews No owner reply appears under any visible review. 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] | 0/2 |
| ✓ | No recurring complaints None of the three reviews Google renders is critical. The histogram carries four one-star ratings out of 25 (16 per cent) outside the visible sample, so this reading rests on the sample. 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 | 0/1 |
| ? | TripAdvisor presence | 0/0.5 |
| ? | Other review platforms | 0/0.5 |
Medical Infrastructure
The range of publicly documented equipment and services. This measures documented availability, not clinical quality.
| ✓ | On-site X-ray Panoramic X-ray included in the published check-up. [s2] | 2/2 |
| ? | CBCT (3D imaging) | 0/2 |
| ✗ | Implantology Not on the published service list; the only declared specialty in the 近畿厚生局 designation list is 歯科. [s2] [reg4] | 0/2 |
| ✗ | Orthodontics Not offered; 矯正歯科 is not among the declared specialties. [s2] [reg4] | 0/2 |
| ? | Oral surgery | 0/2 |
| ✗ | Pediatric dentistry 小児歯科 is not among the clinic's declared specialties and paediatric dentistry is not on its service list. [reg4] | 0/1.5 |
| ? | Emergency care | 0/1.5 |
| ✓ | Works with international patients English, Chinese and Russian pages, with the limits of each stated. [s2] | 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 The clinic states English support is at conversational level and Chinese runs through a telephone interpreting service. [s2] | 2.5/2.5 |
| ✓ | Pre-visit consultation possible 24-hour booking-request form and e-mail enquiry; staff confirm by the next business day. [s1] | 1.5/1.5 |
| ✓ | Clear service explanations [s2] | 1/1 |
| ✓ | Convenient opening hours Open seven days a week including public holidays for the 10:00-13:00 session, with Wednesdays running to 17:00. [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 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 ("Offers consultation in English, Chinese, and Russian, and is 5 minutes by walk from JR and subway Namba station") in the answer for "best dentist Osaka", citing its own site minatomachi-dental.com/index_en.html. [q1] | 1/1 |
| ✓ | Mentioned for: English speaking dentist Japan WebSearch 2026-09-06: named as offering "consultations in English, Russian, and Chinese" in the answer for "English speaking dentist Osaka". [q2] | 1/1 |
| ✗ | Mentioned for: dental implants Japan WebSearch 2026-09-06: not among results for "dental implants Osaka" (named results were Osaka Dental University Hospital, ZAGA Center Osaka, Smile Plan Dental Group, DUO Specialists Dental Clinic). [q3] | 0/1 |
| ✗ | Mentioned for: emergency dentist Japan WebSearch 2026-09-06: not among results for "emergency dentist Osaka" (named results were Osaka Shinsaibashi Evening Dental, NINE DENTAL CLINIC, Yanagida Dental Clinic/OsakaDentist.com, Fujita Dental Clinic, Esaka Dental Clinic). [q4] | 0/1 |
| ✓ | Mentioned for: Japan dental clinic for expats WebSearch 2026-09-06: named and described ("consultations in English, Russian, and Chinese...affordable service pricing") in the answer for "Osaka dental clinic for expats", citing its own site minatomachi-dental.com. [q5] | 1/1 |
| ✓ | Structured data on website schema.org JSON-LD of type Dentist with name, alternate name, URL and telephone. [s1] | 1.5/1.5 |
| ✓ | Google indexing quality own domain minatomachi-dental.com takes the top two results plus a privacy page (3 of 12), though five competing Namba-area practices and the health ministry entry fill most of the rest; the ranking pages are the homepage and a 2018 blog post rather than service pages (SearXNG opnxng.com 2026-09-07) [giq1] | 2/2 |
| ✗ | Dedicated service pages All services are described on the single-page site. [s1] | 0/1.5 |
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 43-01803 — designated 保険医療機関 (dental clinic), 指定年月日 平成26年5月1日 (2014-05-01), 標榜科目 歯科, per the 近畿厚生局 Osaka dental designation list as of 令和8年9月1日 (2026-09-01); founder and managing dentist 三角 佐代子. Also registered as 歯科診療所 in MHLW 医療情報ネット under facility code 3270074100, record last updated 2026/3/9. [reg1] [reg4] [reg2]
Dentists & professional licences
| Dentist | Specialization | Licence No. |
|---|---|---|
| 三角 佐代子 [reg1] [reg3] [reg4] | Founder and managing dentist of record; the clinic itself publishes a biography without a name | Registered 歯科医師 — MHLW 医師等資格確認検索, year of registration 平成25年 (2013). The register publishes no registration number. |
Red Flags
- low No dentists identified anywhere (-2 pts) — No dentist names published (derived from data).
Red-flag penalty applied: -2 points (capped at -20).
Data We Could Not Verify
- Price Transparency: Crown price listed
- Price Transparency: Implant price listed
- Reputation & Reviews: Review recency
- Reputation & Reviews: Active Facebook presence
- Reputation & Reviews: TripAdvisor presence
- Reputation & Reviews: Other review platforms
- Medical Infrastructure: CBCT (3D imaging)
- 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://minatomachi-dental.com/ |
|---|---|
| Phone | +81 6-6567-2152 |
| Google Maps | Map listing |
| Address | 〒556-0021 大阪府大阪市浪速区幸町1-1-1 夕張家ビル201 (Saiwai-cho 1-1-1-201, Naniwa-ku, Osaka 556-0021) |
Contact details are provided for identification only and may change; verify with the clinic directly.
Sources
| ID | Source | What it supports | Accessed |
|---|---|---|---|
| s1 | https://minatomachi-dental.com/ | Clinic name, address, phone, opening hours, booking, services, premises photographs, structured data | 2026-09-04 |
| s2 | https://minatomachi-dental.com/index_en.html | English page: language support, treatment policy, service list and non-insurance price list | 2026-09-04 |
| reg1 | https://www.iryou.teikyouseido.mhlw.go.jp/znk-web/juminkanja/S2430/… | MHLW 医療情報ネット (ナビイ) — the statutory facility register kept under 医療法第6条の3: official name, founder and managing dentist 三角 佐代子, address, phone, last updated 2026/3/9 | 2026-09-04 |
| reg2 | https://data.e-gov.go.jp/data/dataset/iryou_teikyouseido_mhlw | MHLW open data 03-1_dental_facility_info_20251201.csv (snapshot 2025-12-01) — facility ID 2733270074100, official name, address and website | 2026-09-04 |
| reg3 | https://licenseif.mhlw.go.jp/search_isei/jsp/top.jsp | MHLW 医師等資格確認検索 (dentist register), snapshot 2026-09-04 | 2026-09-04 |
| reg4 | https://kouseikyoku.mhlw.go.jp/kinki/tyousa/shinkishitei.html | 近畿厚生局 Osaka dental designation list as of 2026-09-01: 医療機関コード 43-01803, founder, managing dentist, declared specialty and 指定年月日 | 2026-09-04 |
| gmp1 | https://www.google.com/maps/place/Minatomachi+Dental+Clinic/@34.668… | 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 Osaka | AI/search visibility scout — canonical query | 2026-09-06 |
| q2 | search:English speaking dentist Osaka | AI/search visibility scout — canonical query | 2026-09-06 |
| q3 | search:dental implants Osaka | AI/search visibility scout — canonical query | 2026-09-06 |
| q4 | search:emergency dentist Osaka | AI/search visibility scout — canonical query | 2026-09-06 |
| q5 | search:Osaka dental clinic for expats | AI/search visibility scout — canonical query | 2026-09-06 |
| giq1 | search:みなと町歯科 難波 大阪 Minatomachi Dental Clinic Namba | own domain minatomachi-dental.com takes the top two results plus a privacy page (3 of 12), though five competing Namba-area practices and the health ministry entry fill most of the rest; the ranking pages are the homepage and a 2018 blog post rather than service pages | 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: geo added from the MHLW 医療情報ネット open data (snapshot 2025-12-01, facility ID 2733270074100); rule (A) confirmed — the clinic publishes no dentist name of its own, the name 三角 佐代子 comes from the registers only and is not scored; the 近畿厚生局 entry 3420 and the register entry (平成25年) both reproduced live. |
| 2026-09-04 | Initial data collection for the Japan Dental Transparency & Trust Index: verified against the clinic's own multilingual website and English price list, the 近畿厚生局 health-insurance designation list, the MHLW 医療情報ネット facility register and its open-data twin, and the MHLW dentist qualification search. |
A question or a correction?
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