Dr. O'Connor is an electrophysiologist who has practiced at Toledo Cardiology Consultants since 1999 and serves as Co-Director of the Electrophysiology Laboratory at Mercy St. Vincent Medical Center, specializing in arrhythmia management.
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Dr. Mark O'Connor is a cardiologist and electrophysiologist practicing in Toledo, Ohio. He works at Toledo Cardiology Consultants and serves as Co-Director of the Electrophysiology Laboratory there. He is affiliated with several Mercy Health hospitals in the Toledo area, including Mercy St. Vincent Medical Center, where he is also part of the team for the Cardiovascular Disease Fellowship program.
Dr. O'Connor earned his medical degree from the University of Michigan Medical School and completed additional training at the University of Washington, the University of Michigan (cardiology fellowship), and Loyola University Medical Center (electrophysiology fellowship). He is board certified in cardiovascular disease and internal medicine, and is a Fellow of the American College of Cardiology (FACC). Earlier in his career he was an Assistant Professor at Rush University and published several research papers and a book chapter on heart arrhythmias, along with participating in continuing medical education teaching, mostly during the 1990s. No more recent publications, society leadership roles, or awards were found in available searches.
From 2021 to 2025, CMS Open Payments records show Dr. O'Connor received a total of $934.87 across 10 payment records from pharmaceutical and medical device companies, including Kestra Medical Technology, Esperion Therapeutics, iRhythm Technologies, Boehringer Ingelheim, and Pfizer. These kinds of industry payments are common and legal, and are publicly disclosed for transparency.
No news coverage from the last three years, public statements on vaccines or alternative medicine, or license discipline, lawsuit, or criminal records were found for Dr. O'Connor in available searches.
Worth knowing
Federal law requires drug and device companies to report what they pay clinicians: meals, travel, speaking, consulting, and research. Payments are common and legal; the point is that you can see them.
2021 to 2025
$935
10 payments
| 2021 | $0 |
| 2022 | $619 |
| 2023 | $296 |
| 2024 | $0 |
| 2025 | $20 |
Top payers
Payment types
A word of caution about these numbers
A payment does not mean your doctor is compromised or acting unethically. Most of these entries are drug samples left for patients, or lunch brought in for the office staff, and the amounts are usually small. Research funding and speaking at medical meetings are also normal parts of a clinical career.
As a rough guide, a total under $15,000 a year is usually not a concern. Much larger sums, especially from one company whose product your doctor recommends to you, are worth asking about. You are allowed to ask.
Sources: toledocardiology.com · facebook.com · doximity.com · mercy.com · mercy.com · healthytime.org · doctor.webmd.com · care.healthline.com. Something wrong or out of date? Tell us and we will correct it.
This summary was written by the clinician. The lines above it, the payment record, and the sources are ours, checked against the links shown. It is not a review, a rating, or an endorsement.
Toledo Cardiology Consultants, Inc.
2409 Cherry Street, Suite 100
Toledo, OH 43608
Open in mapsCardiologist, Preventive cardiologist · Toledo, OH
Board-certified cardiologist and internist in northwest Ohio who focuses on preventive cardiology, weight loss and lipidology, and is an Assistant Clinical Professor of Medicine at Ohio University.
Call (419) 567-1999