In or Out of Network

Hi, I am the practice manager for a solo practice that is transitioning to a group practice in New York. I am looking for some feedback on experiences with working with clients out of network. 

I have heard contradicting results. We are trying to decide if we want to stay on all insurance panels because the rates they pay are too low, they do not show value in the services offered. In talking with others, I found out that being out of network the insurance companies actually reimburse at a higher rate?

John is the provider I work with and he has always been on every panel. His understanding is that being on the panels helps to keep his practice full. I agree that being in-network offers more exposure. However, if as a clinician you are not getting paid a reasonable rate for the care and service you provide is it worth having that exposed? 

Would it not be better to put efforts into attracting more clients regardless of their insurance. Explain that we will do courtesy benefits check, and submit bills to their insurance on their behalf. I believe I would still have the ability to do courtesy billing through SimplePractice? 

I would really appreciate any feedback anyone has regarding this issue.

Thank you!