| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 3.2 / 5 | Osaka, Japan | — | 3,000+ treatments | Spirometry, bronchodilator reversibility test, sputum eosinophil examination | Breathlessness cases needing asthma and COPD separated | Sputum eosinophil counts and bronchodilator reversibility testing guide asthma diagnosis and treatment. Respiratory Medicine is an endowed chair staffed by Wakayama and Osaka University doctors. JCQHC accredited. | Fellow, American College of Surgeons |