there's a poster named taijijulia who teaches Chen style Taiji. Chen style is more dynamic than the Yang style you see practiced in parks.
There's also a teacher of LoHan (luohan?) style taiji, which is allegedly directly derived from shaolin and is VERY martial. The teacher has a son who has a formal school in some of the major shopping centers (golden eagle?) etc.
Visit the green lake campus of yunda in the mornings around 10am and you'll see the practitioners subtly training.
Definitely not as lethally combat specific as krav - but it's definitely and specifically the combat version of taiji, which maybe more to your liking - although it does NOT stress the high impact sparring and lethality of krav and other harder styles.
For hardcore martial arts practitioners - most add taiji to their retinue as it focuses more on the softer aspects of martial arts - non-crippling, non-lethal (but just as capable) wrist and joint locking, blocking, and non-lethal, non-crippling threat neutralization.
Sometimes - you'll need or want the ability to neutralize without killing or crippling, to make your point.