Why is CKD Stage 3A downplayed? Am I over reacting to be concerned?

I just found out that I have Chronic Kidney Disease stage 3A. When I asked if I should be referred to a Nephrologist, I was basically admonished by my PCP. I was told I've had it for years and it's being monitored and at this point I need to wait for my next PCP visit. Great. Thanks for letting me know. Maybe I was at stage 1 or 2. Who knows lets wait until I hit stage 4. I met with a Urologist yesterday and it's no big deal. I'm 73 so it's to be expected. Jeesh!!