| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 5.0 / 5 (1) | Incheon, Republic of Korea | — | — | Functional endoscopic sinus surgery (FESS) | — | Dedicated ENT department offers FESS for nasal polyps. Doctors completed fellowship training in the US. KOIHA accredited. | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea), Korean Institute for Healthcare Accreditation |