I'd be shocked if you can't find 15 or 20 restaurants within 1 Km of that location which would prepare this staple.

I am pretty sure there are a few places on the other (south) side of Ratchwithi/Srinthorn Road. I think I've been to a fish head (hua bah) restaurant over there on the surface road where the flyover/bridge road comes down. And I seem to remember several other eateries there as well.