| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 2.7 / 5 | Minato City, Japan | — | — | Therapeutic apheresis, aminosalicylic acid (5-ASA), steroids, immunosuppressants | Patients considering blood purification (apheresis) therapy | Gastroenterology team includes a Japan Gastroenterological Society instructor/specialist and doctors trained at Duke University Medical Center; AGA members. JCI-accredited outpatient care. | Joint Commission International |