Then definitely review them, as it doesn't matter who did the service as much as it matters that the necessary services were done.
I say the above not because I believe you have not probably already done so, but for other readers. I've seen instances where "all maintenance was done by the dealer" was true, but "all recommended maintenance" wasn't even close to what was done. Having something close to "all recommended maintenance" having been done, regardless of by whom, including DIY by the owner, is more important than who did it. [Provided, of course, it was done correctly. Most of us can do an oil change correctly if we are so inclined. Replacing a timing belt, not so much, though some can.]
I'm someone who uses a Microsoft Access database to log all maintenance done on my cars, whether by me or professionals. Even I can forget what I've done, and when, for what vehicle. It keeps me honest with myself (and aids my memory).
By the way, and this is something I doubt that many readers will know, maintenance done by Toyota dealers for Toyota cars is logged by Toyota, and can be looked up on their website based upon the VIN of the car. I actually did that for a Solara I recently purchased, and there were records going back to right after it was purchased in 2004.