Medicare Enrolled
Dr. Mark O'Connor, MD
Clinical Cardiac Electrophysiology Physician · Toledo, OH
Practice pattern: Electrophysiology & Device
— Practice focused on heart rhythm disorders and cardiac device management
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. O'Connor from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. O'Connor
Dr. Mark O'Connor is a clinical cardiac electrophysiology physician in Toledo, OH, with 21 years of NPI registration. Based on federal Medicare data, Dr. O'Connor performed 2,570 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. O'Connor received a total of $2,352 from 18 pharmaceutical and/or device companies across 36 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. O'Connor is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 21 years of NPI registration
▲ Top 44% volume in OH
$2,352 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,570
Medicare services
Top 44% in OH for clinical cardiac electrophysiology physician
Not available
Unique patients (not deduplicated)
$48
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
817 | $10 | $95 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
802 | $84 | $148 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
194 | $53 | $175 |
| EKG interpretation and report A standard electrocardiogram test that records the heart's electrical activity using at least 12 leads. The service includes a professional interpretation of the results and a written report. |
144 | $6 | $23 |
| Implantable defibrillator system check A check of the implanted defibrillator device to ensure it is functioning correctly. This evaluation covers single, dual, or multiple lead systems. |
103 | $54 | $170 |
| Programming of single lead implantable defibrillator system Adjustment and testing of the settings for a single-lead implantable cardioverter-defibrillator (ICD) to ensure proper function. |
60 | $56 | $180 |
| Programming of multiple lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with multiple leads to ensure proper function. |
58 | $75 | $225 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
57 | $92 | $175 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
37 | $41 | $500 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
37 | $46 | $80 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
36 | $27 | $220 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
35 | $134 | $250 |
| Evaluation of implantable heart and blood vessel monitoring system This procedure involves checking the function and data of an implanted device used to monitor heart and blood vessel activity. |
29 | $38 | $200 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
25 | $127 | $195 |
| Cardiac rhythm monitor evaluation Review and analysis of data recorded by a cardiac rhythm monitoring device to assess heart activity. |
23 | $37 | $100 |
| Cardiac rhythm monitor programming Adjustment and configuration of an implanted cardiac rhythm monitoring device to ensure proper operation and data collection. |
21 | $44 | $125 |
| Programming of dual lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with two leads to ensure proper function. |
16 | $46 | $225 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
16 | $1 | $50 |
| Aminophylline injection, up to 250 mg Administration of aminophylline medication via injection for a dose of up to 250 mg. |
14 | $7 | $20 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
12 | $41 | $145 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
12 | $132 | $1,100 |
| 2-day continuous ECG with review and report A two-day continuous electrocardiogram recording that includes a professional review and written report of the results. |
11 | $37 | $400 |
| Remote monitoring of implantable heart rhythm device Evaluation of data transmitted remotely from an implantable cardiovascular monitor, such as a loop recorder or subcutaneous cardiac rhythm monitor, over a period up to 30 days. |
11 | $48 | $195 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
18.3% high complexity
4.8% medium
76.8% routine
Industry Payment Transparency
Open Payments through 2023 ↗$2,352
Total received (2018-2023)
Avg $470/year across 5 years
Bottom 17% in OH for clinical cardiac electrophysiology physician
18
Companies
36
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2023
$296
2022
$619
2020
$301
2019
$584
2018
$552
Payments by company (2023)
Kestra Medical Technology Services, Inc.
$216
Amgen Inc.
$80
Top 3 companies account for 100.0% of 2023 payments
All-time payments by company (2018-2023) ›
PFIZER INC.
$381
Amgen Inc.
$230
Kestra Medical Technology Services, Inc.
$216
Janssen Scientific Affairs, LLC
$214
Janssen Pharmaceuticals, Inc
$204
E.R. Squibb & Sons, L.L.C.
$133
Boehringer Ingelheim Pharmaceuticals, Inc.
$127
Esperion Therapeutics, Inc.
$125
iRhythm Technologies, Inc.
$120
AstraZeneca Pharmaceuticals LP
$115
Amarin Pharma Inc.
$105
ABIOMED
$95
Gilead Sciences, Inc.
$75
Novartis Pharmaceuticals Corporation
$70
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$70
Bardy Diagnostics, Inc.
$30
Medtronic Vascular, Inc.
$28
Chiesi USA, Inc.
$15
Top 3 companies account for 35.2% of all-time payments
Associated products mentioned in payments ›
AVIVO · Assure WCD · BRILINTA · Carnation Ambulatory Monitor · ELIQUIS · ENTRESTO · FARXIGA · INVOKANA · Impella · JARDIANCE · KENGREAL · LifeVest · Micra · NEXLIZET · Ranexa · Repatha · VYNDAQEL · Vascepa · XARELTO · ZIO XT Patch
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Clinical cardiac electrophysiology physicians in nearby ZIP areas
4
County median income
$60,095
Nearest hospital to ZIP centroid (approximate)
MERCY ST VINCENT MEDICAL CENTER
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2023 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. O'Connor is an electrophysiology & device specialist, with moderate Medicare volume, with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. O'Connor experienced with electrocardiogram (ekg), 12-lead?
Based on Medicare claims data, Dr. O'Connor performed 817 electrocardiogram (ekg), 12-lead services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. O'Connor receive payments from pharmaceutical companies?
Yes. Dr. O'Connor received a total of $2,352 from 18 companies across 36 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. O'Connor's costs compare to other clinical cardiac electrophysiology physicians in Toledo?
Dr. O'Connor's average Medicare payment per service is $48. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. O'Connor) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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Industry payments
Pharma Payments to Clinical Cardiac Electrophysiology Physicians in OH
Which OH clinical cardiac electrophysiology physicians receive the most from drug and device companies.
By company
PFIZER INC. Payments to Doctors
See all physicians who received payments from PFIZER INC.
By company
Amgen Inc. Payments to Doctors
See all physicians who received payments from Amgen Inc.
By company
Kestra Medical Technology Services, Inc. Payments to Doctors
See all physicians who received payments from Kestra Medical Technology Services, Inc.
About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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