| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 3.6 / 5 | Goyang, Republic of Korea | — | — | Polysomnography | — | — | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea) | |
| #2 | 4.9 / 5 (7) | Seoul, Republic of Korea | — | 32,000+ treatments | Polysomnography | — | — | Global Healthcare Accreditation Program, World's Best Hospitals 2021 by Newsweek |