Life in sendai
You can click on the image and be taken directly to the Life in Sendai publication where you will see a list of emergency providers. Note, if you don't speak Japanese it is better to just Google the location and show up. Most doctors in Sendai can speak English, and can understand the general issues.
You should have a plan of action in the event of a major earthquake. They are rare but you should be prepared. It is Japanese custom to meet your neighbors once you move into your home so get with the locals to see what they do. Click the image for a list of designated refuge areas. You will also be issued a brightly colored banner that you need to put on your front door if everyone is okay.