Is this teak desk Danish?  

It certainly looks danish or...
It certainly looks danish or at least scandinavian produced. The legs show a certain American shaker influence. I most often think of that in conjunction with Børge Mogensen, FDB Møbelfabrik, and various other designers who designed for FDB, like Jørgen Bækmark. Also Fredericia furniture comes to mind.
Basically there is a part of Danish Modern design that shows this shaker influence.
Here is a Mogensen table with the same sort of trestle legs:

It is Danish.
I have had a desk and cabinet with the same drawer pulls in the past. They have never been marked so I would tend to describe them as generic. The quality is good though.
There is a desk with the same drawers (double pedestal, conventional legs) that has somehow ended up with an Arne Vodder attribution, it's even made it onto the Furniture Index.

Thanks...
... for the response. As I assumed, but wasn't sure. What did you use to care for it? I was thinking about giving it a coat of pure tung oil... is that OK? This is my first piece of teak furniture and I dont' want to mess it up.

I Recently Bought a Teak Desk
I recently bought a teak desk and after lots of research I ended up buying a bottle of Scan Care teak oil. I don't know if the desk had ever been oiled but after only one application the desk looks much better. The front edge of the top of the desk was a different color because of arms leaning on the desk for 50 years. After I applied the oil the top is all the same color again.
Chad
http://www.scancare.net/catalog/item/7004300/7046606.htm