Amidst the recent movement towards integrated healthcare, a small yet growing number of general practitioners (GPs) are personally practising complementary and alternative medicines (CAM). Based on transcripts from twenty-five in-depth interviews conducted with GP therapists, this chapter critically examines doctors’ explanations and presentations of their integrative practice. Focus is placed upon a specific area of occupational boundary-work identified within the GPs’ accounts: namely, the non-medical/medical divide. The exploratory study situates the doctors’ boundary-work amidst the ongoing debates between different healthcare providers regarding the authentic location and ownership of CAM.