Trey and I both thought our GP was a bit cavalier about Trey's diabetes. It was a huge deal to us when he was first diagnosed. The GP just wrote him an RX for glucophage and said go take a class about it. Didn't tell him how to get a monitor or anything. Luckily his boss was diabetic and helped us out a lot. We took the class. It was a joke. We were told to follow the food guide pyramid very strictly. Well, you can guess how well that worked. Even with the glucophage, Trey's blood levels were not under control.
Eventually his rx ran out and he didn't want to go back to the GP so unbeknownst to me, he just quit taking it.
I got him started on Atkins thanks to reading about Katholyn's DH and made him an appointment with an endicrinologist. By the time he got in with the specialist, his levels were already so good that he didn't have to start the glucophage again. He's managing it solely with diet.
It's probably not necessary for Trey to go to a specialist, but we were just so unhappy with the way our Dr. handled things at first. We really like the new Dr. He asks lots of questions and explains everything in detail. He makes sure Trey has the proper equipment.
I'm not saying your dad's regular Dr. is not the one to go to, just that there are other options if you're not happy with the way they handle things. It does sound like he might needs his meds reduced. I can't imagine the nurse being so flippant with your dad.
Hope all goes well with his visit today.
One more thing, make sure he checks his levels at different times of the day, not just the same time everyday.