This was considered misconduct and she was struck off the register to practice in singapore and soon the UK as well. So best not to use her as an example... although you are right, there are many top Dr in Sg that command whatever they want. But I can tell you now, overall, Malaysia private Dr on AVERAGE do better due to the lower cost of living and the larger market base over a bigger area. That means there is less patient skewing towards the top doctors/hospital and a more even distribution of patients across private hospitals

For example. A patient in Penang , Melaka or even SJ/Sunway for that matter, is much less likely to go KL to see a supposedly famous doctor / hospital.. unless its a rare condition, or recommended by their local doctor and can't be treated locally.

In Sg however, nothing on the island is more than 30 minutes away so there is no reason not to go somewhere they think is perceived as the best.  And because its smaller but fussier population.. there is a large skew towards the top few centres/doctors.