Dear sirs and madams, 
My name is Katsuyuki Matsumoto, and I visited your hospital a while ago. Since I am going back to Japan shortly, I would like to donate some for Indian society. As I saw your activity there and quite impressed, I believe it could be good if you can accept some from my side. I want to send my check to your organization, so please let me know where to send it and I will arrange the courier to you right after receiving your reply. 
Thank you, 
Katsuyuki Matsumoto