If NO stars was an option that would be my rating. The office staff is rude whether in person or on the phone. The doctor is very demeaning in his visit to the patient and also me as a parent. He treats you as you don't know anything (he's the all knowing doctor) and then tells you how to raise your children!!! Being in the medical field personally, I have never been exposed or around such unprofessional and rude people....doctors, nurses, or other health professionals. I thought my first visit was just an off day for him so, gave him the benefit of the doubt for a second visit....against my better judgement!! He is not anyone I would want my kids or anyone I know that has kids to see as a pediatrician. What doctor tells a parent, "I think you need to go elsewhere?" Mind you this was upon our second and LAST visit to this office!! Vegas is a big place and there are far better pediatricians than Dr. Nishihara.