First, let's fix the minor grammar issues here: "I am an accounting professional with a master's degree in accounting." There's no need to capitalize any of those words, and the degree is referred to as a "master's," not a "master" degree.
Yes, you can do that. The sentence is a little redundant, but if someone read the sentence "I am an accounting professional with a master's degree," they could fairly ask the question "A master's degree in what field?", so I think what you've got is fine.