I'm pretty sure the Memorial Hermann Clinic at/near Town Center will accept Medicare patients. I believe they currently have 2 doctors. I've not seen either one but seriously considering checking it out since I am already in the Memorial Hermann system.
The list showing "Docs In KW Accepting Medicare" is not accurate. For example, it shows several doctors from the Kelsey Seybold Clinic (Lithuanian, Trinh, Koo, etc.). Kelsey does not accept traditional Medicare - only their Medicare advantage program.