| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | — / 5 | Incheon, Republic of Korea | 76+ years | Functional endoscopic sinus surgery (FESS) | Chronic sinusitis not managed with medication alone | ENT specialists offer Functional Endoscopic Sinus Surgery (FESS) for chronic sinusitis. Doctors with US fellowship training and KOIHA-accredited hospital ensure expert care. | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea), Korean Institute for Healthcare Accreditation |