Yes, doc is a Scrabble word!
...and is worth 6 points in Scrabble, and 7 points in Words with Friends
doc
Noun
1. A licensed medical practitioner
2. The United States federal department that promotes and administers domestic and foreign trade (including management of the census and the patent office); created in 1913
What Scrabble words can I make with the letters in doc?
3 Letter Words
2 Letter Words