Dr Primero Ng is an interventional cardiologist subspecialising in chronic total occlusion (CTO) PCI, complex and high-risk coronary intervention, and imaging- and physiology-guided coronary care. He treats patients with long-standing arterial blockages, heavily calcified arteries, multivessel and left main disease, failed or under-expanded stents, and coronary disease where the right course of treatment is not straightforward — including patients seeking a second opinion on complex coronary disease. He also sees patients for preventive cardiology, and reports and uses cardiac CT to guide assessment and procedure planning. He is an Interventional Cardiologist at Royal Perth Hospital.
Quick facts
| Name | Dr Primero Ng |
| Specialty | Consultant Interventional Cardiologist |
| Qualifications | MBBS (Hons), FRACP, FACC, FSCAI |
| Special interests | Chronic total occlusion (CTO) PCI; complex and high-risk coronary intervention; intravascular imaging and coronary physiology; cardiac CT; preventive cardiology |
| Medical school | University of Western Australia, Perth, Australia |
| Subspecialty fellowships | Interventional Cardiology, Royal Perth Hospital, Perth, Australia; Cardiac CT, Royal Perth Hospital, Perth, Australia; Complex and High-Risk Indicated PCI (CHIP), University of Washington, Seattle, USA |
| Public appointment | Interventional Cardiologist, Royal Perth Hospital; Co-Lead, Complex Coronary Therapeutics Program, Royal Perth Hospital |
| Private consulting | eCardiology, Suite 41, Mount Medical Centre, 146 Mounts Bay Road, Perth WA 6000; and eCardiology, 57 Murdoch Drive, Greenfields (Mandurah) WA 6210 |
| Private appointment | Bethesda Mount Hospital, Hollywood Private Hospital and St John of God Murdoch Hospital |
| Telehealth | Available for selected referrals across WA |
| Bookings | eCardiology, (08) 9468 5578 or 1800 574 819 (GP or specialist referral required for Medicare rebates) |
| Website | drprimerong.com.au |
Training and qualifications
Dr Ng graduated with honours in medicine from the University of Western Australia and completed specialist cardiology training across Perth's major tertiary hospitals, gaining Fellowship of the Royal Australasian College of Physicians. He then undertook advanced coronary training at Royal Perth Hospital, building a foundation in intravascular imaging and coronary physiology, alongside a fellowship in cardiac CT.
He was subsequently selected as the only overseas fellow to train at the University of Washington Medical Center in Seattle, where he completed a formal Complex and High-Risk Indicated PCI (CHIP) fellowship under Dr Bill Lombardi, Dr Kate Kearney and Dr Lorenzo Azzalini. He is a Fellow of the American College of Cardiology and a Fellow of the Society for Cardiovascular Angiography and Interventions. In 2026 he was named to SCAI's 30 in Their 30s, an international award recognising emerging leaders in interventional cardiology.
Published research
Dr Ng is first author of peer-reviewed work on complex coronary intervention in international peer-reviewed journals. He wrote the 2025 state-of-the-art review on the management of coronary stent underexpansion in the Journal of the American College of Cardiology (2025;85:625–644), with co-authors including Akiko Maehara, Ajay Kirtane, Margaret McEntegart, Farouc Jaffer and Kevin Croce. He was a key collaborator for the novel SLASH technique — Snare-Assisted Laceration of Subintimal Hematoma — for preserving side branches during bifurcation CTO PCI, published in Catheterization and Cardiovascular Interventions (2025).
His further first-author work includes the retrograde Scratch-and-Go technique for CTO PCI (Canadian Journal of Cardiology, 2026), reverse CART facilitated by a novel perfusion balloon (EuroIntervention, 2025), and an invited review on PCI of chronic total occlusions in patients with prior bypass surgery (Interventional Cardiology Clinics, 2025). He is a contributing investigator to the international PROGRESS-COMPLICATIONS registry and publishes on coronary physiology, microvascular function and valve surgery outcomes.
Clinical practice
Dr Ng treats chronic total occlusions — arteries completely blocked for three months or longer — along with in-stent restenosis and stent underexpansion, heavily calcified coronary arteries, multivessel and left main disease, and angina that persists despite optimal medical therapy. A substantial part of his practice involves revascularisation for patients who have been declined bypass surgery or who wish to avoid it, and he welcomes second opinions where patients have been told no further treatment is possible.
Intravascular ultrasound, optical coherence tomography and pressure-wire physiology are used routinely rather than selectively, to determine whether to intervene, how, and whether the result is likely to last. Being dual-trained in cardiac CT, he is also able to plan non-invasive and invasive assessment together, and reports coronary CT angiography and calcium scoring for Western Radiology.
Approach
Successful coronary care, in Dr Ng's view, is not measured only by what happens to an artery. It is measured by whether a patient understands their condition, is able to make an informed decision about it, and returns to living well. His practice is deliberate, imaging-guided and evidence-based, and every recommendation is shaped by the individual patient's anatomy, symptoms, risk and personal goals.
Where he practises
Dr Ng holds a public appointment as an Interventional Cardiologist at Royal Perth Hospital, where he is Co-Lead of the Complex Coronary Therapeutics Program. In this role he helps advance complex coronary care, develop structured referral and treatment pathways, and improve access to contemporary interventional techniques for patients across Western Australia.
In private practice, he consults at his rooms at Mount Medical Centre (Suite 41, 146 Mounts Bay Road, Perth) and in Mandurah (57 Murdoch Drive, Greenfields), and performs coronary procedures at Bethesda Mount Hospital, Hollywood Private Hospital and St John of God Murdoch Hospital. He also reports cardiac CT studies for Western Radiology, supporting an integrated, imaging-led approach to diagnosis and treatment planning.
MBBS (Hons)
Foundation medical degree with honours from the University of Western Australia
FRACP
Fellow of the
Royal Australasian College of Physicians
FACC
Fellow of the
American College of Cardiology
FSCAI
Fellow of the
Society for Cardiovascular Angiography & Interventions
For GPs
- Refer for: chronic total occlusion, in-stent restenosis or stent under-expansion, heavily calcified disease, left main or multivessel disease, angina despite optimal therapy, or patients declined for CABG. General cardiology, cardiac CT review and atrial fibrillation referrals are also accepted.
- Second opinions: send the angiogram disc or a PACS link and prior reports with the referral.
- Where: private rooms at Mount Medical Centre (Perth CBD) and Mandurah; procedures at Bethesda Mount Hospital, Hollywood Private Hospital and St John of God Murdoch Hospital. Referral details are on the For Referring GPs page.
- Antiplatelets: every letter states the antiplatelet plan and stop dates; please do not stop antiplatelet therapy early without discussion.