Dr. John O’Mahony’s Primary Care Team

Dr. John O’Mahony, along with Keagan Jamieson NP, and our entire team of nurses and administrative staff are here to provide you with the best possible Primary Care. We are dedicated to ensuring that your health needs are met in an empathetic, professional, and efficient manner through a team-based approach to medical care.

Dr O’Mahony graduated from the University College Cork’s Medical School with a combined Bachelor of Science and Medical Degree in 1997. After a 1-year internship Dr O’Mahony was accepted to the Dublin Basic Surgical Training Program for a 2-year program that culminated in him being granted a Membership from the Royal College of Surgeons, Ireland (MRCSI) after a 3-part exam.

In addition to working part time in family practice and emergency medicine, Dr. O’Mahony co-founded and was the President of Allergy Standards Limited (ASL) between 2000-2008. ASL is a physician-led global certification company that prepares independent standards for testing a wide range of products to determine their suitability for asthma and allergy patients.

Dr O’Mahony managed the launch of the Asthma and Allergy Friendly® Certification Program in North America in cooperation with the Asthma Society of Canada and the Asthma and Allergy Foundation of America. Dr O’Mahony stepped down as President of ASL in 2008 in order to start his family medicine residency program at the University of Western Ontario. He completed his residency program and passed his CCFP exams in 2010.

In 2010, Dr O’Mahony established his own family practice and has been working fulltime in Sarnia since. He is also an Adjunct Professor of Family Medicine, at the Western Schulich School of Medicine, London, Ontario and enjoys teaching medical students and residents from Western and other medical schools in Canada and abroad. He has admitting privileges at Bluewater Health and in addition to his office practice he also delivers babies; cares for his patients in hospital; works in the emergency department; performs minor operative procedures and joint injections in ambulatory care; conducts a newborn circumcision clinic; and is the medical director of Trillium Villa Nursing Home, Sarnia.