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5.0(315 reviews)
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John L. Petersen
Internal Medicine Physician - Interventional Cardiology

Biography

John L. Petersen is a Internal Medicine Physician - Interventional Cardiology practicing in Seattle, WA

He has not yet shared a personalized biography with Doctor.com.

Featured Review See More Reviews

Dr. Peterson is extremely professional and knowledgeable.…

Anonymous

Summary

Specialties

Languages Spoken
English
Medical Specialties
  • Internal Medicine Physician - Sub-Specialty: Interventional Cardiology

Years In Practice: 24 (started in 2002)

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 315
Most Recent Review: 09/19/2026
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Office & Staff Evaluation Not rated

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation 5.0

Clear Explanations 5.0
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Verified Patient

“Dr. Peterson is extremely profes...”

Dr. Peterson is extremely professional and knowledgeable.

Anonymous 09/19/2026
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Verified Patient

“First time with this provider . ...”

First time with this provider . I appreciate the professional setting.

Anonymous 09/07/2026
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Verified Patient

“Happy to be seen and have confid...”

Happy to be seen and have confidence in medical team.

Anonymous 09/06/2026
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Verified Patient

“I have seen several doctors and ...”

I have seen several doctors and specialists in the past 3yrs. This was by far the most informative, worthwhile and enjoyable visit. I was given the opportunity to be heard. I felt like I was finally heard and my concerns taken seriously. I have so much faith in my treatment moving forward. Thank you from the deepest part of my heart

Anonymous 08/30/2026
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Verified Patient

“Everyone was friendly, courteous...”

Everyone was friendly, courteous & professional.

Anonymous 08/14/2026
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Verified Patient

“I have had Dr Peterson for many ...”

I have had Dr Peterson for many years and he also was my husband's doctor. He has been the best doctor one can have. Always explaining clearly everything. I am very grateful for him for excellent care and support he has given me and my husband before he died...

Anonymous 09/17/2026
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Verified Patient

“All good...”

All good

Anonymous 09/06/2026
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Verified Patient

“Everything is as good as could b...”

Everything is as good as could be expected.

Anonymous 08/30/2026
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Verified Patient

“Dr Peterson is an excellent card...”

Dr Peterson is an excellent cardiologist in all respects. Thank you.

Anonymous 08/18/2026
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Verified Patient

“Dr. Petersen is an exceptional c...”

Dr. Petersen is an exceptional cardiologist. He is friendly and knowledgeable. I am so lucky that he oversees my cardiac care. He is thorough and makes sure all information has been gathered before making big medical decisions.

Anonymous 08/03/2026
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Locations

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Procedures & Services

Procedures & Treatments Offered

    Commonly Prescribed Medications

    John L. Petersen has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    John L. Petersen has not yet specified the insurance plans he accepts.