I had a very small tumor (6mm) with neg. nodes -- diagnosed in 1996. My onc. recommended radiation and five years of tamoxifen. He saw me every six months for five years while I took tamoxifen. But, I have not seen him for the past three years. I have had clean mammograms and no unusual lumps, so I feel comfortable without regular visits. But, if I were you, I would want to be checked every six months while taking tamoxifen, too. Lauri