Thailand - Regional eats in Bangkok

Sawasdee krup,

I've been to Bangkok many a time, though typically roost near Sukhumvit Soi 3-admittedly, it's one of my favorite neighborhoods solely based on the available cuisines (Middle Eastern, South Asian). That's probably because I've lived in East Asia a bunch, never far from a Japanese/Chinese/Korean/Thai place, and when in BKK, eating falafel, shwarma and daal is a nice respite.

Which isn't to say Thai food is something I shun- far from it. My question is, are there different neighborhoods in Bangkok where you can try regional Thai cooking? Save for "Isaan," which also has at least one place by Sukhumvit Soi 3, how about food from Krabi, Narathiwat, Lanta, etc? Or, since there's street food all over the place, do those stalls more or less, blend the country's victuals together under one tarpaulin?

Kop khun krup.

http://www.cnngo.com/bangkok/eat/7-top-southern-thai-dishes-and-where-find-them-bangkok-902599

I think you may find food courts, street vendors and even restaurants preparing some southern dishes especially if they come from that area. A local restaurant (for me) is operated by a family from the south so they do prepare some dishes based on the spice blend (prik gaeng) they have shipped from home. When available my favorite is Sataw Goong, sataw is a tree bean also called stink beans, which is a very spicy curry with shrimp and stinkbeans.