Omega Precision Oncology

Has anyone visited Paul Zhang at Omega Precision Oncology in Houston?
I am looking to see what their experiences were like here and with this specific doctor as well.
I have Stage 4 gastic cancer and am seeking a reliable, reputable integrative oncologist to help me through this process.
Any suggestions and recommendations are welcome and appreciated!
I am located in Oklahoma if anyone has any recommendations for closer to home.