Expats I know living in Penang use either the Adventist Hospital...or Gleneagles Hospital.
There are others, including a public hospital, but I think an expat might need a Visa to use that one.
Btw I don't think there are any more non-stop flights Bali-Penang vv.
It's been too long ago since I used a Penang hospital that my experience isn't relevant but fwiw I used the Bangkok Phuket Medical Centre for a full check-up in Nov 2011, whilst on a short holiday. I thought, at the time, it was an excellent check-up professionally conducted but, like I said, the Bali Siloam check in April this year was equally good, half the cost of Phuket, and many more choices of tests.
The worst check-up i've had in recent years was the one in Vancouver...took a week to get the lab results and they were not as free as I presumed...Rp800,000 for a prostate PSA...Siloam charged Rp243,000 and same-day results.
One of the issues I have with Siloam is they keep pushing for further checks...doctors sounding like 2nd hand car salesman....and my cardiologist had very dirty teeth...I nearly recommended he see my dentist:icon_e_biggrin:
Penang Adventist Hospital
Bangkok Hospital Phuket - International Hospitals in Thailand.