Op. Dr. Umut Zereyak — Plastik, Rekonstrüktif ve Estetik Cerrahi
Under our open methodology this clinic scores 64.7/100 on structural verification: physician certification, licences, facility and legal-entity traceability, identifier disclosure and advertising honesty.
Rank #3 of 15 ranked clinics · last checked 18 September 2026
No crown: crowns require register-verified gates, never a clinic's own claim.
Summary
Private plastic-surgery practice in Kadıköy, Istanbul, published under the name of a single responsible surgeon. The surgeon is listed in the Turkish plastic-surgery society member directory with the same street address; the site displays a health-tourism authorisation certificate as an image without a number, and publishes no licence, facility or company registration number.
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 Could not verify — this register is closed to machine queries in this country, so the axis is left out of the coverage calculation for every clinic on this site. Not a negative finding. Reason: Register closed to machine queries. Last attempt: tpcd, 18 September 2026 — HTTP 200, 1 row: "UMUT ZEREYAK | CADDE BOSTAN MAH. BAĞDAT CAD. KANTARCI RIZA SOK. NO:1 D:4" → member page /Doktor-Bilgileri/1595, Şehir İSTANBUL. A specialty-society roster, not a state board, so the finding is a card fact. The country’s specialist register is behind e-Devlet login, so this axis is not scored anywhere on this site; the secondary finding is shown as a card fact. |
? | ? | 26 | 2026-09-18 |
| M2 | Identifiability of the responsible physician Physician(s) named with role and tied to this address. The responsible surgeon is named with his role on the front page and in the site header, and the address he is tied to matches the address the society directory records for him. [site] |
SEC | 16 | 2026-09-18 | |
| M3 | Basic medical licence Could not verify — this register is closed to machine queries in this country, so the axis is left out of the coverage calculation for every clinic on this site. Not a negative finding. Reason: Register closed to machine queries. Last attempt: tpcd, 18 September 2026 — The society roster confirms the specialty and the practice address but publishes no licence or diploma number, and no open Turkish source does; the clinic publishes none either (pages loaded: https://zereyak.com/, /iletisim/, /estetik-burun-ameliyati-rinoplasti/). Physician register behind e-Devlet login; the clinic publishes no licence or diploma number on the pages loaded (https://zereyak.com/, https://zereyak.com/iletisim/ and https://zereyak.com/estetik-burun-ameliyati-rinoplasti/). |
? | ? | 8 | 2026-09-18 |
| M4 | Facility registration Could not verify — this register is closed to machine queries in this country, so the axis is left out of the coverage calculation for every clinic on this site. Not a negative finding. Reason: Register closed to machine queries. Last attempt: mohtourism, 18 September 2026 — Absent from the Ministry health-tourism facility list, which is scoped to hospital-level facilities. The site displays a "Sağlık Turizmi Yetki Belgesi" as a scanned image with no number in the page text, so the rubric anchor 3 does not apply. Facility register behind an image CAPTCHA; the clinic publishes no facility or authorisation number on the pages loaded (https://zereyak.com/, https://zereyak.com/iletisim/ and https://zereyak.com/estetik-burun-ameliyati-rinoplasti/). |
? | ? | 10 | 2026-09-18 |
| M5 | Legal-entity traceability Brand only. The practice is published under the surgeon’s own name; no company name and no registration number appear on the pages loaded. MERSİS and the Ticaret Sicili Gazetesi are login-gated, and the open ETBİS site query (GET https://etbis.ticaret.gov.tr/tr/SiteSorgulama?url=zereyak.com, 2026-09-18) returned "Site Kaydı Bulunamadı". [site] [contact] |
SEC | 8 | 2026-09-18 | |
| M6 | Self-disclosure of identifiers Logos without numbers. A Ministry health-tourism authorisation certificate and a HealthTürkiye badge are displayed as images; no certificate, licence or registration number is published as text. [site] |
SEC | 10 | 2026-09-18 | |
| M7 | Advertising honesty No pattern from the lexicon found. Lexicon scan of the clinic’s own text on the pages loaded (https://zereyak.com/, https://zereyak.com/iletisim/ and https://zereyak.com/estetik-burun-ameliyati-rinoplasti/): no guarantee, "100 %", unlimited-graft or issuer-less superlative pattern found. [site] |
SEC | 12 | 2026-09-18 | |
| M8 | Cross-locale consistency Some facts appear on only one front. Mechanical comparison of 4 language fronts (tr, en, ru, fr) on 2026-09-18: a phone number appears on one front only. [fronts] |
SEC | 5 | 2026-09-18 | |
| M9 | Patient documents One. The rhinoplasty page carries an "Ameliyat Sonrası" (post-operative care) section; informed-consent, risk/contraindication, revision-policy and complaint-route documents were not found on the pages loaded. [procedure] |
SEC | 5 | 2026-09-18 |
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 |
|---|---|---|
| Op. Dr. Umut Zereyak [site] [tprecd] | Plastic, reconstructive and aesthetic surgeon; the practice is published under his own name | not published |
Legal entity: could not verify
Scope and procedure segments
Clinic focus: specialist (no focus adjustment) [site]
- Rhinoplasty: verified yes →
- Breast surgery: verified yes →
- Liposuction & body contouring: verified yes →
- Hair transplant: verified yes →
- Injectables: verified yes →
- Medical weight loss: verified no
- Foreign-patient register (Ministry of Health, Health Tourism Department — list of authorised health-tourism facilities): not found in the register [mohlist]
Secondary findings (not scored)
What a professional society, an international directory, a hospital page or another jurisdiction’s register says, shown for information where the country’s own register is closed. These facts enter neither the score nor the coverage.
- M1 · Specialist certification of the responsible physician SECTürk Plastik Rekonstrüktif ve Estetik Cerrahi Derneği member directory, queried 2026-09-18: UMUT ZEREYAK, registered address "CADDE BOSTAN MAH. BAĞDAT CAD. KANTARCI RIZA SOK. NO:1 D:4", Şehir İSTANBUL — the same address as the clinic. A specialty-society roster, not a state board, so it is shown outside the score.[tprecd]
What we could not verify
- M1 · Specialist certification of the responsible physician — Register closed to machine queries
- M3 · Basic medical licence — Register closed to machine queries
- M4 · Facility registration — Register closed to machine queries
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://zereyak.com/ |
|---|---|
| Phone | +90 530 934 13 03 |
| Address | Caddebostan Mah., Bağdat Cad., Kantarcı Rıza Sk. No:1 D:4, Kadıköy, İstanbul |
| City | Istanbul |
For identification only; details change — verify with the clinic directly.
Sources
| ID | Source | Class | What it supports | Accessed |
|---|---|---|---|---|
| site | https://zereyak.com/ | clinic's own site | physician name and role, menu of procedures, practice branding | 18 September 2026 |
| contact | https://zereyak.com/iletisim/ | clinic's own site | street address, telephone, e-mail | 18 September 2026 |
| procedure | https://zereyak.com/estetik-burun-ameliyati-rinoplasti/ | clinic's own site | procedure page with the post-operative care section (M7 lexicon scan, M9) | 18 September 2026 |
| tprecd | https://plastikcerrahi.org.tr/Doktor-Bilgileri/1595 | secondary | TPRECD member page reached from POST https://plastikcerrahi.org.tr/doktor-arama/istanbul TextBox2=ZEREYAK: Ad Soyad, Kurum, İş Adresi, Şehir | 18 September 2026 |
| directory | https://www.doktortakvimi.com/umut-zereyak/plastik-rekonstruktif-ve… | secondary | independent Turkish doctor directory listing for the same physician and specialty | 18 September 2026 |
| mohlist | https://shgmturizmdb.saglik.gov.tr/TR-94834/yetkili-hastaneler.html | official register | GET https://shgmturizmdb.saglik.gov.tr/TR-94834/yetkili-hastaneler.html (PDF), pdftotext -enc UTF-8 -raw, searched "Zereyak" — not present | 18 September 2026 |
| fronts | https://zereyak.com/ | clinic's own site | language fronts compared mechanically for M8 — tr: https://zereyak.com/ | en: https://zereyak.com/en/home-page/ | ru: https://zereyak.com/ru/plasticheskaya-rekonstruktivnaya-esteticheskaya-hirurgiya/ | fr: https://zereyak.com/fr/page-daccueil/ | 18 September 2026 |
Change history
| Date | Change |
|---|---|
| 18 September 2026 | axes.M8: null → 3 (Mechanical cross-locale comparison (methodology v1.1, item 9).) |
| 18 September 2026 | Initial collection (v1.2 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.
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