Medicare Enrolled
Dr. Thomas Mayer, MD
Internal Medicine · Bannockburn, 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. Mayer 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. Mayer
Dr. Thomas Mayer is an internal medicine specialist in Bannockburn, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Mayer performed 2,948 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Mayer received a total of $95,082 from 39 pharmaceutical and/or device companies across 760 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. Mayer 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 10% volume in IL
$95,082 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,948
Medicare services
Top 10% in IL for internal medicine
Not available
Unique patients (not deduplicated)
$66
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. |
1,093 | $73 | $224 |
| 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. |
770 | $6 | $32 |
| 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. |
236 | $11 | $42 |
| Cardiac catheterization | 123 | $204 | $1,041 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
113 | $52 | $239 |
| 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. |
92 | $96 | $380 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
79 | $20 | $93 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
74 | $2 | $14 |
| 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. |
73 | $6 | $28 |
| 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. |
72 | $469 | $2,148 |
| Intravascular ultrasound of heart vessel, initial An ultrasound procedure used to evaluate a blood vessel within the heart during a diagnostic or treatment procedure. |
54 | $62 | $336 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 46 | $286 | $1,406 |
| 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. |
36 | $109 | $370 |
| Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist | 21 | $245 | $1,262 |
| Additional heart vessel ultrasound evaluation An ultrasound evaluation of an additional heart blood vessel performed during a diagnostic or treatment procedure. |
20 | $45 | $197 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
19 | $168 | $921 |
| Right heart catheterization A procedure where a thin, flexible tube is inserted into the right side of the heart to measure pressure and oxygen levels. |
15 | $108 | $506 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
12 | $70 | $278 |
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.
14.1% high complexity
7.7% medium
78.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$95,082
Total received (2018-2024)
Avg $13,583/year across 7 years
Top 1% in IL for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
39
Companies
760
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
$4,230
2023
$4,652
2022
$3,786
2021
$3,368
2020
$8,964
2019
$20,638
2018
$49,444
Payments by company (2024)
Amgen Inc.
$536
Novartis Pharmaceuticals Corporation
$524
Boehringer Ingelheim Pharmaceuticals, Inc.
$484
Janssen Pharmaceuticals, Inc
$437
Medtronic, Inc.
$342
Edwards Lifesciences Corporation
$290
PFIZER INC.
$288
Novo Nordisk Inc
$288
AstraZeneca Pharmaceuticals LP
$195
ABIOMED
$185
Kiniksa Pharmaceuticals International, plc
$173
Boston Scientific Corporation
$139
E.R. Squibb & Sons, L.L.C.
$88
ShockWave Medical, Inc
$65
Merck Sharp & Dohme LLC
$44
Lilly USA, LLC
$35
Alnylam Pharmaceuticals Inc.
$28
Inari Medical, Inc.
$24
Imperative Care, Inc
$23
Lexicon Pharmaceuticals, Inc.
$22
SCPHARMACEUTICALS INC.
$21
Top 3 companies account for 36.5% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Pharmaceuticals, Inc
$28,424
Novartis Pharmaceuticals Corporation
$15,334
AstraZeneca Pharmaceuticals LP
$13,181
Amgen Inc.
$11,812
E.R. Squibb & Sons, L.L.C.
$7,145
Medtronic Vascular, Inc.
$4,498
Novo Nordisk Inc
$2,633
Abbott Laboratories
$1,792
Boston Scientific Corporation
$1,698
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,448
Medtronic, Inc.
$1,007
Cardiovascular Systems Inc.
$992
ABIOMED
$861
Edwards Lifesciences Corporation
$783
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$663
PFIZER INC.
$537
Janssen Scientific Affairs, LLC
$309
HeartFlow, Inc.
$277
BIOTRONIK INC.
$210
SANOFI-AVENTIS U.S. LLC
$207
Impulse Dynamics (USA) Inc.
$176
Kiniksa Pharmaceuticals International, plc
$173
Amarin Pharma Inc.
$135
Opsens Inc.
$132
Actelion Pharmaceuticals US, Inc.
$125
Regeneron Healthcare Solutions, Inc.
$119
ShockWave Medical, Inc
$65
Merck Sharp & Dohme LLC
$62
BOSTON SCIENTIFIC CORPORATION
$49
Lilly USA, LLC
$35
Alnylam Pharmaceuticals Inc.
$28
Aziyo Biologics, Inc.
$27
Esperion Therapeutics, Inc.
$25
Inari Medical, Inc.
$24
Imperative Care, Inc
$23
Lexicon Pharmaceuticals, Inc.
$22
SCPHARMACEUTICALS INC.
$21
Teleflex LLC
$17
ACADIA Pharmaceuticals Inc
$15
Top 3 companies account for 59.9% of all-time payments
Associated products mentioned in payments ›
AURORA EV-ICD MRI SURESCAN · AVVIGO Guidance System · Arcalyst · Asahi Fielder coronary guide wire · BRILINTA · CAMZYOS · CARDIOMEMS · CHANTIX · COBALT DR MRI SURESCAN · COREVALVE EVOLUT R · COROFLOW · CardioMEMS HF System · Catheter - Turnpike · Cobalt · Comet · Corlanor · Coronary Orbital Atherectomy System · ECM Patch · ELIQUIS · ENTRESTO · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · Endeavor · FARXIGA · FFRct · FLOWTRIEVER CATHETER · FUROSCIX · GENERAL - ATHERECTOMY · Impella · JARDIANCE · KESIMPTA · LEQVIO · LINQ II · LOKELMA · LifeVest · MULTAQ · NEXLETOL · NUPLAZID · ONPATTRO · ONYX FRONTIER · OPSUMIT · OPTICROSS · OPTIMIZER · OptiCross · Optis Coronary Imaging System · OptoWire · Ozempic · PRADAXA · PRALUENT ALIROCUMAB INJECTION · Pouch · ROTABLATOR · ROTAPRO · RYBELSUS · Repatha · Reveal XT · Rybelsus · S · SAPIEN 3 Ultra RESILIA · SELECTSECURE · SYMPHONY CATHETER · SYMPLICITY G3 · SYNERGY · SelectSecure · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · THORATEC HEARTMATE 3 LVAS IMPLANT KIT · Telescope · UPTRAVI · VERQUVO · VYNDAQEL · Vascepa · Victoza · WAINUA · WATCHMAN · WATCHMAN Access System · Wegovy · Wolverine Coronary Cutting Balloon · XARELTO · ZEPBOUND
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
Internal medicine physicians in nearby ZIP areas
4,901
County median income
$108,917
Nearest hospital to ZIP centroid (approximate)
NORTHWESTERN LAKE FOREST HOSPITAL
4.5 mi
4.5 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. Mayer is a clinical cardiology specialist, with above-average Medicare volume (top 10% 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. Mayer experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Mayer performed 1,093 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. Mayer receive payments from pharmaceutical companies?
Yes. Dr. Mayer received a total of $95,082 from 39 companies across 760 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. Mayer's costs compare to other internal medicine physicians in Bannockburn?
Dr. Mayer's average Medicare payment per service is $66. 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. Mayer) 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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