Medicare Enrolled
Dr. Patrick O'Leary, MD
Cardiovascular Disease · Winfield, IL
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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'Leary 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'Leary
Dr. Patrick O'Leary is a cardiovascular disease specialist in Winfield, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. O'Leary performed 5,002 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. O'Leary received a total of $3,389 from 20 pharmaceutical and/or device companies across 159 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'Leary 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.
✓ 20 years of NPI registration
▲ Top 16% volume in IL
$3,389 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗5,002
Medicare services
Top 16% in IL for cardiovascular disease
Not available
Unique patients (not deduplicated)
$64
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 |
|---|---|---|---|
| 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. |
1,148 | $94 | $229 |
| 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. |
908 | $6 | $28 |
| 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. |
649 | $97 | $218 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
571 | $124 | $763 |
| 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. |
377 | $11 | $72 |
| 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. |
252 | $136 | $431 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
201 | $8 | $20 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
129 | $13 | $69 |
| 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. |
112 | $125 | $359 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
67 | $65 | $151 |
| Physician review of home INR testing A physician reviews, interprets, and manages home INR testing results for patients with mechanical heart valves, chronic atrial fibrillation, or venous thromboembolism who meet Medicare coverage criteria. |
60 | $6 | $21 |
| Continuous external EKG monitoring, 48 hours to 7 days This procedure involves recording the heart's electrical activity continuously using an external device for a period exceeding 48 hours but not more than 7 days. |
52 | $9 | $49 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
52 | $19 | $77 |
| Perflutren lipid microspheres injection Injection of perflutren lipid microspheres, measured per milliliter. |
52 | $36 | $455 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
50 | $8 | $44 |
| Liver enzyme (SGOT) level test A blood test that measures the level of the liver enzyme SGOT to help assess liver health. |
47 | $5 | $28 |
| Liver enzyme (SGPT) level test A blood test that measures the level of the liver enzyme SGPT to assess liver function. |
47 | $5 | $28 |
| Prothrombin time test (blood clotting) A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process. |
45 | $4 | $20 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
39 | $10 | $55 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
34 | $21 | $84 |
| Continuous external EKG monitoring, 8-15 days This procedure involves recording heart rhythm continuously using an external EKG device over a period of 8 to 15 days. |
33 | $10 | $49 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
27 | $8 | $40 |
| Stress echocardiogram with ECG monitoring An ultrasound of the heart performed while monitoring heart rhythm during rest, exercise, or medication-induced stress, followed by a review and report of the findings. |
16 | $182 | $934 |
| Hospital follow-up visit, low complexity Follow-up hospital visit for an established patient with straightforward or low-level medical decision making. The visit requires at least 25 minutes of time spent on the day of service. |
12 | $41 | $83 |
| 2-day continuous ECG monitoring A continuous electrocardiogram recording that captures heart activity over a 48-hour period. This test helps detect irregular heart rhythms or other cardiac issues that may not appear during a standard, short-term ECG. |
11 | $13 | $92 |
| 2-day continuous ECG with professional review A two-day continuous electrocardiogram recording that includes a review by a healthcare professional. |
11 | $13 | $71 |
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.
11.4% high complexity
1.4% medium
87.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,389
Total received (2018-2024)
Avg $565/year across 6 years
Top 43% in IL for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
20
Companies
159
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.
2024
$1,016
2023
$1,255
2022
$647
2021
$201
2019
$239
2018
$31
Payments by company (2024)
Medtronic, Inc.
$409
Novartis Pharmaceuticals Corporation
$187
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$82
E.R. Squibb & Sons, L.L.C.
$68
Boehringer Ingelheim Pharmaceuticals, Inc.
$64
SCPHARMACEUTICALS INC.
$40
SANOFI-AVENTIS U.S. LLC
$33
Kestra Medical Technology Services, Inc.
$32
PFIZER INC.
$25
Abbott Laboratories
$25
Esperion Therapeutics, Inc.
$20
Amgen Inc.
$18
AstraZeneca Pharmaceuticals LP
$13
Top 3 companies account for 66.7% of 2024 payments
All-time payments by company (2018-2024) ›
Novartis Pharmaceuticals Corporation
$846
Medtronic, Inc.
$590
Janssen Pharmaceuticals, Inc
$354
Abbott Laboratories
$234
E.R. Squibb & Sons, L.L.C.
$216
Boston Scientific Corporation
$172
Boehringer Ingelheim Pharmaceuticals, Inc.
$143
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$131
CVRx, Inc.
$116
SCPHARMACEUTICALS INC.
$106
PFIZER INC.
$103
Amgen Inc.
$87
Kestra Medical Technology Services, Inc.
$77
BIOTRONIK INC.
$64
SANOFI-AVENTIS U.S. LLC
$33
BOSTON SCIENTIFIC CORPORATION
$27
AstraZeneca Pharmaceuticals LP
$27
Merck Sharp & Dohme LLC
$26
Esperion Therapeutics, Inc.
$20
Novo Nordisk Inc
$17
Top 3 companies account for 52.8% of all-time payments
Associated products mentioned in payments ›
Assure WCD · BRILINTA · Barostim Neo System · CAMZYOS · CARDIOMEMS · ELIQUIS · ENTRESTO · FARXIGA · FUROSCIX · INTELLIS ADAPTIVESTIM · JARDIANCE · LEQVIO · LifeVest · MAZOR X SYSTEM · MOMENTUM · MULTAQ · Mitra Clip system · NEXLETOL · Repatha · VERQUVO · WATCHMAN · WATCHMAN Access System · XARELTO
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
Cardiologists in nearby ZIP areas
453
County median income
$110,502
Nearest hospital to ZIP centroid (approximate)
NORTHWESTERN MEDICINE CENTRAL DUPAGE HOSPITAL
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 2024 |
| 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'Leary is a clinical cardiology specialist, with above-average Medicare volume (top 16% in IL), with 20 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'Leary experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. O'Leary performed 1,148 office visit, established patient (30-39 min) 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'Leary receive payments from pharmaceutical companies?
Yes. Dr. O'Leary received a total of $3,389 from 20 companies across 159 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'Leary's costs compare to other cardiologists in Winfield?
Dr. O'Leary's average Medicare payment per service is $64. 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'Leary) 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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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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