Some doctors are just weird. We had one that told us that we shouldn't let our kids drink anything besides water. That's it. Water.
Disclaimer: My kids love water. And they also don't drink soda. But they love milk, and lemonade, and hot cocoa and frozen butterbear. The doctor was totally against all that.
We have a new doctor. :good vibes
The big concern is how do you not harm a 4 year old by having her come in for monthly weight checks at the doctor's office? That's setting her up for an eating disorder for sure.
Who in the world would tell a 4 year old that they were concerned about their weight?
A month for a 4 year old is an eon. You just tell her that you are going in for a doctor's appointment. Let them do their thing and you leave. You don't make a big deal about it and you don't mention weight.
It is actually very simple to not make it into an issue that could lead to an eating disorder.
Quirks like weird healthy eating tips are one thing. A doctor that orders blood work on a toddler is something entirely different and suggests that he suspects something besides just a healthy but chubby child.
I know I would want to do everything I could to make sure there wasn't something underlying.
The OP said she can't move pediatricians right now as she has to wait for her new insurance to kick in. So, she is stuck with the rude front office.
I would go in for the weight check and then speak to the doctor about how she was treated by the front desk. See how he handles it. She said he is always friendly and professional when she is there.
She is taking the way a receptionist reacted to her, when as Pea-n-Me pointed out, the OP was pretty rude and antagonistic first, and then blaming it on the doctor.