Dr. Drew Sings National Anthem for Kings ... Kills It!

Oh, say can you see Dr. Drew Pinsky -- mild-mannered radio and TV doctor -- singing like Boccelli, Domingo or Pavarotti??

Of course you can't, but turns out Dr. Drew really does have musical chops ... and he used 'em to belt out the Star Spangled Banner at last night's L.A. Kings game in Staples Center.

When Drew took to the ice, you could tell the crowd was a little shocked. But the good doc -- who's now hosting "Dr. Drew Midday Live with Mike Catherwood" on KABC radio -- tells us he's always loved singing.

He took vocal lessons during college, and even though he never lived out his opera dreams ... he kept training while practicing medicine.

Check it out, he even nailed that last note -- the one that makes you cringe 'cause you're never sure if the person can do it.