I personally have not been but have received a good recommendation.

Manomedica
Shirokane 1-28-9, Shimizu Building 501, Minato-Ku Tokyo 108-0072
Tel: 03-3441-7789
http://www.manomedica.com/contact/index.html
Located in front of exit #3 at Shirokane-Takanawa station (2 stops on the subway from either Meguro or Roppongi) on the Namboku and Mita lines

Chiropracty, manual and herbal therapy (Chinese medicine), Crainopathy available.
English, Japanese, French (and Dutch?)

Also, I think there might be a 15% discount available on the initial evaluation if you read about it on the Tokyo American Club website.