Medicare Enrolled
Dr. Elizabeth Retzer, M.D.
Cardiovascular Disease · Mchenry, IL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Retzer 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. Retzer
Dr. Elizabeth Retzer is a cardiovascular disease specialist in Mchenry, IL, with 18 years of NPI registration. Based on federal Medicare data, Dr. Retzer performed 6,750 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Retzer received a total of $7,705 from 16 pharmaceutical and/or device companies across 105 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. Retzer 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.
✓ 18 years of NPI registration
▲ Top 9% volume in IL
$7,705 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗6,750
Medicare services
Top 9% in IL for cardiovascular disease
Not available
Unique patients (not deduplicated)
$34
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 |
|---|---|---|---|
| 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. |
4,020 | $6 | $56 |
| 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. |
580 | $88 | $323 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
432 | $51 | $380 |
| 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. |
324 | $93 | $311 |
| Routine 12-lead electrocardiogram (ECG) A test that records the electrical activity of the heart using at least 12 leads to produce a tracing. |
288 | $4 | $95 |
| Heart muscle strain imaging | 173 | $9 | $147 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
160 | $10 | $67 |
| 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. |
120 | $117 | $505 |
| 3D radiographic procedure A radiographic imaging technique that creates three-dimensional representations of internal structures. |
98 | $7 | $57 |
| 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. |
94 | $11 | $140 |
| Cardiac catheterization | 92 | $209 | $1,957 |
| 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. |
84 | $136 | $633 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
44 | $137 | $434 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
43 | $167 | $678 |
| Hospital discharge management, 30+ min This service covers the care provided by a physician or qualified healthcare professional on the day a patient is discharged from the hospital. It requires more than 30 minutes of total time spent on the day of discharge. |
34 | $86 | $320 |
| Coronary stent placement A procedure to insert a stent into a coronary artery or its branch to keep it open, using balloon dilation during the process. |
32 | $438 | $3,687 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
25 | $20 | $147 |
| Transcatheter aortic valve replacement via femoral artery A minimally invasive procedure to replace a diseased aortic heart valve using a catheter inserted through the skin and femoral artery. |
24 | $613 | $8,269 |
| Follow-up ultrasound of heart blood flow, valves and chambers An ultrasound exam that follows up on the heart's blood flow, valves, and chambers. It uses sound waves to create images of the heart's structure and function. |
20 | $6 | $98 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
20 | $2 | $175 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
16 | $173 | $1,608 |
| New patient office visit, complex (60-74 min) | 16 | $173 | $625 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
11 | $81 | $330 |
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.
8.9% high complexity
3.2% medium
87.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$7,705
Total received (2018-2024)
Avg $1,101/year across 7 years
Top 28% in IL for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
16
Companies
105
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
$863
2023
$2,058
2022
$193
2021
$198
2020
$99
2019
$2,172
2018
$2,121
Payments by company (2024)
Medtronic, Inc.
$532
Edwards Lifesciences Corporation
$92
Abbott Laboratories
$76
Bolton Medical Inc
$56
Boston Scientific Corporation
$53
Teleflex LLC
$32
AngioDynamics, Inc.
$21
Top 3 companies account for 81.2% of 2024 payments
All-time payments by company (2018-2024) ›
Abbott Laboratories
$3,386
Medtronic, Inc.
$2,408
ABIOMED
$805
Edwards Lifesciences Corporation
$366
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$342
Medtronic Vascular, Inc.
$89
Bolton Medical Inc
$56
Boston Scientific Corporation
$53
W. L. Gore & Associates, Inc.
$47
Bard Peripheral Vascular, Inc.
$42
Teleflex LLC
$32
AngioDynamics, Inc.
$21
E.R. Squibb & Sons, L.L.C.
$18
Philips Electronics North America Corporation
$17
Lantheus Medical Imaging, Inc.
$13
Cardinal Health 200 LLC
$11
Top 3 companies account for 85.6% of all-time payments
Associated products mentioned in payments ›
(4066) Tack Endo Sys ATK · ALPHAVAC · AMPLATZER AMULET · AMPLATZER TALISMAN · CARDIOMEMS · COREVALVE EVOLUT R · Cardiac Mapping System · CardioMEMS HF System · Connectivity and Remote care · CoreValve Evolut · Crosser iQ · DEFINITY · ELIQUIS · Edwards SAPIEN 3 Transcatheter Heart Valve · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · GORE CARDIOFORM Septal Occluder · Hi-Torque Balance guide wires · Hi-Torque Floppy guide wire · Impella · LifeVest · Mitra Clip system · ONYX FRONTIER · Perclose ProGlide suture mediated closure system · RELAY THORACIC STENT-GRAFT WITH PLUS DELIVERY SYSTEM · SAPIEN 3 Ultra RESILIA · Supera peripheral stent system · TRAPLINER · WATCHMAN Access System · WATCHMAN FLX · Xience Sierra Coronary Stent System · Xience V coronary stent system
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
90
County median income
$102,836
Nearest hospital to ZIP centroid (approximate)
NORTHWESTERN MEDICINE MCHENRY
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. Retzer is a mixed practice specialist, with above-average Medicare volume (top 9% in IL), with 18 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. Retzer experienced with ekg interpretation and report?
Based on Medicare claims data, Dr. Retzer performed 4,020 ekg interpretation and report 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. Retzer receive payments from pharmaceutical companies?
Yes. Dr. Retzer received a total of $7,705 from 16 companies across 105 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. Retzer's costs compare to other cardiologists in Mchenry?
Dr. Retzer's average Medicare payment per service is $34. 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. Retzer) 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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