Based on our experiences (both mine and my colleagues) - Vista Clinic Beijing is NOT a trustworthy place. Their doctors are inexperienced and do not have the interests of the patients in mind.
For me, the OBGYN gave me the wrong diagnosis and also the wrong medicine to insert. After a couple of weeks my condition worsen as a result.
My colleagues took his two year old son as there were red dots all over him. The doctor there told her his son has a rare form of skin disease with an attitude. It turns out that the little boy only had measles.
They just wanted to charge you lots of money. Do not go there.