
Internal Medicine
Datuk Dr. Joseph Ong Ah Soon is a distinguished Consultant Physician with over five decades of dedicated service in Internal Medicine. Commencing his private practice at Assunta Hospital in 1978, he has demonstrated exceptional commitment and longevity, becoming a respected figure in Malaysian healthcare. Beyond his extensive clinical experience, Dr. Ong has contributed significantly to medical education and corporate governance as a Member of the Board of Trustees for the IMU Foundation since 2011, underscoring his multifaceted impact on the medical community.
Wan MC
November 19, 2025 at 2:15 AM
My grandma n mom's Dr. Friendly Dr who cares for his patients. He charges min consultantion which I only found out when system was down when I was waiting to make pymt. His staff asked why I was still at pymt area. She informed the counter datuk charges his patients min consultantion fee.
Li Shing Ng
November 12, 2025 at 6:27 PM
Eswary (Datuk Dr Joseph Ong’s nurse, room 16) went over and above in making my visit extra smooth. Her service was top notch, she was incredibly helpful in letting me know about waiting times, was very efficient and had a calm personality. I appreciate such friendly staff given workloads can be very heavy at a hospital. Datuk Dr Joseph Ong was extremely helpful, and is a seasoned and experienced doctor. It was a great experience, as he quickly calmed all nerves and fully explained any further actions and mitigations. Excellent service from Datuk Dr Ong and Eswary!
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Petaling Jaya, Malaysia

Petaling Jaya, Malaysia