| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.8 / 5 (281) | Istanbul, Turkey | 13+ years | — | — | — | Certification according to DIN EN ISO 9001 by TÜV NORD CERT, Joint Commission International | ||
| #2 | 4.8 / 5 (8) | Istanbul, Turkey | — | — | — | — | — | — | |
| #3 | 4.6 / 5 (430) | Istanbul, Turkey | — | — | — | — | — | International Organization for Standardization, Joint Commission International | |
| #4 | 4.2 / 5 | Warsaw, Poland | 47+ years | Functional endoscopic sinus surgery (FESS), septoplasty, conchoplasty, polypectomy, septorhinoplasty, biostimulation laser therapy | A crooked septum or enlarged turbinates causing blockage | Rhinomanometry objectively measures congestion, on-site CT lab offers rapid low-radiation sinus imaging, and FESS with microsurgical instruments treats chronic sinusitis. 1,500+ laryngology surgeries yearly. | — | ||
| #5 | 4.0 / 5 (1) | Warsaw, Poland | 20+ years20,000+ treatments | FESS, septoplasty, rhinoseptoplasty, nasal polyp removal | Deviated septum or chronic sinusitis cases | Offers FESS for chronic sinusitis – a minimally invasive approach. Doctor has 20,000+ ENT procedures. ISAPS-accredited facility for nasal congestion care. | Given to the doctor International Society of Aesthetic Plastic Surgery (ISAPS) Сertificate | ||
| #6 | 4.8 / 5 (16) | Seoul, Republic of Korea | — | 1,000+ treatments | — | — | — | Korean Institute for Healthcare Accreditation | |
| #7 | 5.0 / 5 (3) | Madrid, Spain | — | — | — | — | — | Joint Commission International , International Organization for Standardization | |
| #8 | — / 5 | Incheon, Republic of Korea | — | — | Functional endoscopic sinus surgery | Chronic sinusitis or allergic rhinitis | US fellowship-trained ENT specialists perform FESS for chronic sinusitis, a key cause of congestion. KOIHA-accredited hospital with dedicated rhinology focus. | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea), Korean Institute for Healthcare Accreditation | |
| #9 | 4.6 / 5 | Cairo, Egypt | — | — | — | — | — | Global Hospital Rating | |
| #10 | — / 5 | Wuppertal, Germany | — | — | — | — | — | International Accreditation System for Interventional Oncology Services (IASIOS), German Cancer Society |