Mittsu Institute
Under our open methodology this clinic scores 75.3/100 on structural verification: physician certification, licences, facility and legal-entity traceability, identifier disclosure and advertising honesty.
Rank #18 of 30 ranked clinics · last checked 20 September 2026
- Specialist-led
Summary
Private plastic-surgery clinic in Amsterdam-Zuid founded by a plastic surgeon whose registered specialism is confirmed in the BIG register. Facial and body surgery, injectables and skin treatments are offered at the address recorded in the national facility register.
Axis by axis
rubric value 1–5 · ? could not verify (no points, not a negative finding) · — not applicable: this country has no register of that class · OFF official register · SEC secondary source
| Axis | Finding (rubric anchor) | Value | Source class | Weight | Checked |
|---|---|---|---|---|---|
| M1 | Specialist certification of the responsible physician Found by name or number; specialty matches what is advertised; status current. BIG register: registration current, professional group Arts (01), not struck out, and the registered specialism matches the service the clinic advertises. No measure or practice restriction is listed on the record. [big] |
OFF | 26 | 2026-09-20 | |
| M2 | Identifiability of the responsible physician Physician(s) named with role and tied to this address. The clinic names the founding plastic surgeon with his role and ties him to this address. [site] |
SEC | 16 | 2026-09-20 | |
| M3 | Basic medical licence Matched by name. Matched by name to a single unambiguous BIG record in professional group 01; the clinic does not publish the registration number itself. [big] |
OFF | 8 | 2026-09-20 | |
| M4 | Facility registration Record found: name, address and status match. Facility register: registered name and address match the clinic’s own site; the provider is registered in care sector 86.22.1 and has not been deregistered. [lrza] |
OFF | 10 | 2026-09-20 | |
| M5 | Legal-entity traceability Brand only. The clinic names no legal entity on its own pages; the company located through the facility register does not raise this axis. [site] |
SEC | 8 | 2026-09-20 | |
| M6 | Self-disclosure of identifiers No identifiers at all. No registration numbers are published on the clinic’s own pages. [site] |
SEC | 10 | 2026-09-20 | |
| M7 | Advertising honesty One or two soft superlatives. Pages loaded: the home page, /behandelingen/ and its sub-pages, /over-ons/, /het-team/, /prijslijst-nl/ and /contact-nl/. Two soft claims of this kind were found and no outcome or safety guarantee. [site] de beste zorg en begeleiding bieden |
SEC | 12 | 2026-09-20 | |
| M8 | Cross-locale consistency Could not verify — no points, counts against coverage, not a negative finding. Reason: Single language front. Last attempt: clinic_site, 20 September 2026 — one language front; no hreflang alternates or language links The clinic site publishes one language front; nothing to compare. |
? | ? | 5 | 2026-09-20 |
| M9 | Patient documents Two or three. Pages loaded: /behandelingen/around-surgery-care/ (aftercare), the surgical treatment pages (risk and recovery information) and the linked complaints procedure. No consent document and no revision policy were found. [site] |
SEC | 5 | 2026-09-20 |
Score ceilings
No ceiling applies. We never apply one on 'not found' alone.
Holds
No hold on this profile.
Inclusion policy
Four mechanical conditions. The first three decide whether a clinic is listed at all; the fourth decides whether it can be scored.
| Identifiable: live public surface + working in-country contact | verified yes [site] |
|---|---|
| Provides the service itself (not an aggregator, booking site or tour packager) | verified yes [site] |
| In scope: the intervention is performed by a physician | verified yes [site] |
| Names a responsible physician | verified yes [site] |
Who is responsible
Named physicians and the legal entity, as published and as matched in the registers. A missing number is a statement about disclosure, not about licensing.
| Physician | Role | Register ID |
|---|---|---|
| Dr. Frank Niessen [site] [big] | Plastic surgeon; founder | 99032416301 |
Legal entity: Mittsu Institute Amsterdam B.V. · 70519269 [lrza]
Scope and procedure segments
Clinic focus: specialist (no focus adjustment) [site]
- Rhinoplasty: verified no
- Breast surgery: verified yes →
- Liposuction & body contouring: verified yes →
- Hair transplant: verified no
- Injectables: verified yes →
- Medical weight loss: verified no
- Sanctions / discipline register (BIG-register — maatregelen en bevoegdheidsbeperkingen (disciplinary measures and practice restrictions), CIBG / VWS): no entry found [big]
What we could not verify
- M8 · Cross-locale consistency — Single language front
These cells score nothing and are not negative findings. A cell on a register that is closed to machine queries is left out of the coverage calculation; the others count against it. Each one names why it is empty; an attempt that did not complete is re-run in the next collection pass. If you can point to a public source, send it.
Contact details
| Website | https://mittsu-institute.com/ |
|---|---|
| Phone | 020-3412001 |
| Address | Maasstraat 79H, 1078 HE Amsterdam |
| City | Amsterdam |
For identification only; details change — verify with the clinic directly.
Sources
| ID | Source | Class | What it supports | Accessed |
|---|---|---|---|---|
| site | https://mittsu-institute.com/het-team/ | clinic's own site | physician name, role, treatment menu, address | 20 September 2026 |
| big | https://zoeken.bigregister.nl/api/search/registration/details/99032… | official register | medical licence, registered specialism, measures and practice restrictions (GET /api/search/registration/details/99032416301; located through GET /api/search/criteria?name=Niessen&specialismType=34, one record) | 20 September 2026 |
| lrza | https://zoeken.zorgaanbiedersportaal.nl/api/v1/Organisatie/70519269 | official register | facility registration, registered name, legal form, address, care sector and KVK number (POST /api/v1/Zoeken naam=..., then GET /api/v1/Organisatie/70519269) | 20 September 2026 |
Change history
| Date | Change |
|---|---|
| 20 September 2026 | Initial collection (v1.2 loop pass 1). |
Correction or right of reply
Corrections are applied with a source link and logged publicly. A clinic statement without a source is published next to the data; the score does not change.