They don't provide any medical/dental first three months. They don't tell you this during interview process. They just send you tons of emails and links and documents where your benefits are described but it's really not clear anywhere what benefits you get and when.
They will tell you they fight for highest salary you can get but they don't do anything. They just want to add you to any company possible and after that they are pretty much done. You will almost never hear from them.