As of 2014, deep brain stimulation (DBS, think pacemaker for the brain) is formally recommended in the US for treatment-resistant OCD.

http://www.medicalnewstoday.com/articles/282899.php

In the SF Bay area, Stanford, UCSF and Kaiser all have very active DBS practices treating a range of conditions.

https://stanfordhealthcare.org/medical-clinics/deep-brain-st...

http://neurosurgery.ucsf.edu/index.php/deep-brain-stimulatio...