ADHD treatment in Japan

Hi everyone, I’m posting from a throwaway for privacy.

I’m preparing to move to Japan (no confirmed date yet, but hopefully sometime next year due to some contract delays) and trying to plan ahead for ADHD treatment and general mental health care once I’m there.

I’ve been diagnosed with ADHD, high-functioning autism, and mild bipolar II. My psychiatrist currently has me on Vyvanse (lisdexamfetamine), which has helped me more than anything I’ve tried before. I know it’s not available in Japan, but I’ve used Concerta (methylphenidate) in the past and would be open to that or something similar if needed.

I’m hoping to find an English-speaking psychiatrist or clinic in Tokyo that can look at my existing diagnosis instead of starting completely from scratch. My doctor is happy to provide all medical records and coordinate directly with whoever takes over my care to make the transition smooth.

If anyone has experience continuing ADHD treatment in Japan, or knows of clinics that work with foreigners and prescribe Concerta, I’d really appreciate your advice. I’m just trying to prepare properly before the move.

Thanks so much