The phrase "as he occasionally does" is correct and usable in written English.
You can use it to indicate that someone performs a certain action from time to time.
Example: "He tends to surprise us with his creativity, as he occasionally does when brainstorming new ideas."
Alternatives: "as he sometimes does" or "as he does from time to time."
As he occasionally does, Pérez said he felt more excited Wednesday night.
Act as if,' " Milch told me, speaking, as he occasionally does, not in the voice of a literature professor but as a humbled believer in twelve-step orthodoxy.
Don't tell me it's not, in large part, because Vince Carter can create a highlight package of his own as easily as he flips open a cellphone, without monopolizing the commercial benefits as much as he occasionally does the ball.
And while it is hard not to be seduced by Mr. Newcombe's furious charisma, it is also hard to accuse the Dandy Warhols, as he occasionally does, of selling out.
But he did not inject himself into the proceedings, as he occasionally did during his trial.
Two days after Jefferson wrote his letter endorsing a "wall of separation" between church and state, he attended, as he occasionally did, religious services in the House of Representatives.
David Cameron can sometimes appear, as he occasionally did in interviews on Sunday, like a pre-Thatcher leader of a post-Thatcher Conservative party.
In it, P. D. James departs, as she occasionally does, from her contemporary mysteries and Adam Dalgliesh to imagine what might have happened if Jane Austen had involved Elizabeth Bennet and Fitzwilliam Darcy in a post-nuptials murder.
If she instead attacks Sanders himself, as she occasionally does, rather than addressing the very American demand for fairness, she will alienate his supporters and, should she become the nominee, in their anger they could sit out the election.
My friend says that when Mr. Sternbach stops by the lab, as he still occasionally does, he is treated like a king.
He arrived by limousine and — as he occasionally still does — spoke of returning to his former playing weight of 200-plus pounds and making a comeback.
