Try the Treatment and Learning Centers.

They are good, but take limited insurance.

They do dyslexia and speech testing https://www.readingllcenter.com/

You need a full neuropsych done

How does he do on dibels (standardized reading test)

How does he do socially? Are the speech issues mainly articulation?

First grader can read some easy books (those with a few sentences per page) by himself with little adult support. He still struggles with spelling and reading, but it is a big improvement compared to a year ago. He is going to see a developmental pediatrician at children hospital soon as a follow up on his developmental delay. He will be 7 at that time. IEP has writing, reading, social emotional and speech goal. What testing should we suggest to developmental pediatrician that she can refer us to do it? Learning disability testing, dyslexia testing or intelligence testing?