About Dr. John Louis Petersen, M.D., MHS

Welcome to the practice of Dr. John Louis Petersen, M.D., MHS, an experienced cardiologist serving Seattle, Washington. We are committed to providing compassionate, evidence-based cardiovascular care with a focus on prevention, early detection, and personalized treatment plans.

Medical Disclaimer: The information on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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Patient Reviews

Patient

Dr. John L Petersen almost killed me by severing an artery during an angiogram and caused me to have cardiac bypass surgery! Gordon Kritzer is better if you value your life and safety

Patient

★★★★★

Dr Peterson is absolutely a dedicated cardiologist who is knowledgeable efficient and up-to-date in all areas of cardiology care, I am grateful to Dr Peterson and his staff for their kind, and high quality Care

Patient

★★★★★

The best!!

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