To find a doctor, you might start here:

Himawari Service (Tokyo Metropolitan Government) 03-5285-8181
Will try to connect you with a doctor that speaks your language. Open every day including all holidays from 9:00-20:00.
Himawari Interpretation Service (Tokyo Metropolitan Government) 03-5285-8185
Officially available from 17:00-20:00 but may be provided earlier if the staff is not busy with other calls. In five languages: English, Chinese, Spanish , Korean and Thai. Togalo available on Wednesdays. Does not officially include the Kawasaki/Yokohama corridor - but there is some information for some areas outside but near Tokyo available.

And:

AMDA International Medical Information Center (Though located in the same building as and sharing information and some personnel with Himawari ServiceTokyo, they are officially an NGO and separate from Himawari) 03-5285-8088
Hours: Mon-Fri: 9:00 -17:00 Has greater geographic reach or can provide contact numbers for other NPOs in other areas.
Used to be the "Association of Medical Doctors in Asia" but they have changed their "name" but kept the AMDA (because there is another AMDA that they did not want to be confused with - go figure).

.....
Yes, I can see what's wrong with the set-up, expecially offering interpretation outside of regular doctor's house seems rather counter-productive, but their attitude is that it is free and you should be saying thank you instead of asking so many questions. (Well, it may appear "free" but it is paid for by tax-payer money, isn't it?)

They answered that some of the staff is made up of volunteers, but actually they are paid volunteers.

I recommend the following site which is introducing Medical Institutes with foreign languages speaking doctors.

http://on-top.net/cgi-bin/hospital/index.cgi

Here is another great site for foreign languages speaking doctors.

http://www.himawari.metro.tokyo.jp/qq/qq13enmnlt.asp

from AMDA Kansai:
From: センタ・#91; 関西 amdack@nifty.com
To: admin@tokyowithkids.com
Sent: Thu Feb 23 10:54
Subject: Request for web-posted information update
Dear Japan/Tokyo With Kids Webmaster,

This is AMDA International Medical Information Center Kansai.

We noted that your website has our information under "Links:" section in your "Special Needs Kids - Resources for Parents" page in your "FYI" section (http://www.tokyowithkids.com/fyi/specialneeds.html). However, the phone number and the URL listed is outdated.

The current phone number is 06-4395-0555, URL is http://homepage3.nifty.com/amdack/, and FAX number is 06-4395-0554. However, we cannot process inquiries via FAX, mails, or emails. Therefore, we are requesting that only the phone number and the URL made available on web sites.

Thank you for your time keeping the information up to date on the page and any other pages in your webite.

Sincerely,

AMDA International Medical Information Center Kansai
505 pia NPO 2-8-24 Chikko, Minato-ku, Oksaka zip 552-0021 Japan
Tel: 06-4395-0555
Fax: 06-4395-0554
email: amdack@nifty.com
URL: http://homepage3.nifty.com/amdack/