My gfr is 48, creatinine 1.20 does someone with these numbers always need to see a kidney doctor?

It depends: GFR estimates from spot creatinines are subscientific. The foolishness only begins with the automatic, arbitrary adjustment for race "because black people are more muscular than white people." When I was lifting weights daily, my creatinine ran 1.6 to 1.8 and I was perfectly healthy. Ask whether you can be re-tested off ibuprofen etc. before a consult is requested.