Medicare Enrolled
Dr. David Stewart, M.D.
Internal Medicine · Chicago, 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. Stewart 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 →
Are you Dr. Stewart?
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What this data tells you about Dr. Stewart
Dr. David Stewart is an internal medicine specialist in Chicago, IL, with 18 years of NPI registration. Based on federal Medicare data, Dr. Stewart performed 4,196 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Stewart received a total of $125,217 from 60 pharmaceutical and/or device companies across 992 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. Stewart 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 6% volume in IL
$125,217 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗4,196
Medicare services
Top 6% in IL for internal medicine
Not available
Unique patients (not deduplicated)
$102
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. |
1,528 | $85 | $270 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
360 | $55 | $190 |
| 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. |
269 | $126 | $370 |
| 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. |
175 | $10 | $30 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
167 | $62 | $536 |
| Cardiac catheterization | 147 | $160 | $589 |
| 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. |
132 | $99 | $350 |
| 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. |
126 | $59 | $150 |
| Ultrasound of heart blood vessel or graft An ultrasound exam to evaluate blood flow in a heart blood vessel or graft, including a radiologist's review of the initial vessel. |
116 | $65 | $191 |
| Additional blood vessel ultrasound evaluation An ultrasound exam of a blood vessel that includes a radiologist's review. This code applies to each additional vessel evaluated beyond the initial one. |
115 | $50 | $186 |
| 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. |
109 | $367 | $1,170 |
| 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. |
83 | $88 | $220 |
| Review by radiologist of both arms and legs veins of both arms or legs image | 74 | $51 | $147 |
| Vein stent insertion with radiologist review A stent is placed in a vein to keep it open, with review by a radiologist. This is performed on the initial vein treated. |
72 | $284 | $817 |
| Radiofrequency vein destruction, first vein A procedure to treat the first incompetent vein in the arm or leg using radiofrequency energy and imaging guidance. |
58 | $190 | $2,560 |
| Insertion of tube into second-order vein branch A procedure involving the placement of a tube into a secondary branch of a vein. |
56 | $93 | $1,175 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
55 | $121 | $478 |
| New patient office visit, complex (60-74 min) | 53 | $143 | $460 |
| Radiologist review of arm or leg artery images A radiologist reviews images of the arteries in one or both arms or legs to assess blood flow and vessel health. |
50 | $66 | $196 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
48 | $95 | $280 |
| Arterial plaque removal in leg A procedure to remove plaque buildup from the arteries in the leg to restore blood flow. |
44 | $397 | $1,190 |
| Radiologist review of abdominal aorta image A radiologist reviews images of the abdominal aorta to evaluate the blood vessel. |
40 | $48 | $140 |
| Radiologist review of lower body vein image A radiologist reviews images of the major veins in the lower body to assess their structure and function. |
40 | $39 | $114 |
| Vein catheterization, first order branch Insertion of a tube into a vein that is a primary branch of a larger vessel. |
30 | $83 | $2,551 |
| Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist | 24 | $219 | $668 |
| Intravascular ultrasound of heart vessel, initial An ultrasound procedure used to evaluate a blood vessel within the heart during a diagnostic or treatment procedure. |
22 | $45 | $147 |
| Arterial plaque removal, initial vessel A procedure to remove plaque buildup from an artery in the leg. This is performed on the first vessel treated during the session. |
19 | $476 | $1,390 |
| 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. |
19 | $77 | $230 |
| 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. |
18 | $530 | $1,673 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 17 | $231 | $748 |
| Transitional care management services, moderate complexity Services provided to coordinate care during the transition from an inpatient or other facility setting back to the community. This includes follow-up and management of a health problem of at least moderate complexity. |
16 | $150 | $420 |
| Aortic tube insertion A procedure to place a tube into the aorta, the main artery carrying blood from the heart to the rest of the body. |
15 | $98 | $475 |
| Additional heart vessel ultrasound evaluation An additional ultrasound assessment of a specific heart blood vessel or graft, including radiologist review. |
15 | $51 | $154 |
| 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. |
14 | $129 | $410 |
| Insertion of vena cava tube A procedure to place a tube into the vena cava, the large vein that carries blood to the heart. |
13 | $107 | $1,710 |
| Radiologist review of abdominal aorta and leg artery images A radiologist reviews images of the abdominal aorta and the arteries in both legs. This process involves analyzing the visual data to assess the condition of these blood vessels. |
12 | $69 | $200 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
12 | $52 | $150 |
| Radiologist review of arm or leg artery image A radiologist reviews images of the arteries in the arm or leg. This process involves analyzing the visual data to assess the blood vessels. |
11 | $60 | $172 |
| Tube insertion in bypass graft for diagnosis A tube is inserted into a bypass graft to allow for diagnostic evaluation. A radiologist reviews the procedure. |
11 | $188 | $558 |
| Aortography with contrast and radiologist review An imaging procedure using contrast dye to visualize the aorta above the heart valve, including professional review by a radiologist. |
11 | $27 | $240 |
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.
10.1% high complexity
10.4% medium
79.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$125,217
Total received (2018-2024)
Avg $17,888/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.
60
Companies
992
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
$57,601
2023
$28,606
2022
$14,127
2021
$4,947
2020
$1,992
2019
$12,175
2018
$5,769
Payments by company (2024)
Medtronic, Inc.
$50,442
W. L. Gore & Associates, Inc.
$2,084
ABIOMED
$1,479
Endologix LLC
$697
ARGON MEDICAL DEVICES, INC.
$450
Novartis Pharmaceuticals Corporation
$342
Amgen Inc.
$286
Boston Scientific Corporation
$285
Inari Medical, Inc.
$265
CORDIS US CORP.
$195
Surmodics, Inc.
$188
Abbott Laboratories
$178
Edwards Lifesciences Corporation
$165
Penumbra, Inc.
$157
Philips North America LLC
$138
CARDIVA MEDICAL, INC.
$37
SCPHARMACEUTICALS INC.
$32
E.R. Squibb & Sons, L.L.C.
$31
Inspire Medical Systems, Inc.
$30
Baylis Medical Technologies Inc.
$23
BIOTRONIK INC.
$21
PFIZER INC.
$18
SANOFI-AVENTIS U.S. LLC
$15
AstraZeneca Pharmaceuticals LP
$14
Kiniksa Pharmaceuticals International, plc
$14
Merck Sharp & Dohme LLC
$14
Top 3 companies account for 93.8% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic, Inc.
$76,105
Medtronic Vascular, Inc.
$6,521
Edwards Lifesciences Corporation
$5,219
Cardiovascular Systems Inc.
$4,682
Inari Medical, Inc.
$4,629
Philips Electronics North America Corporation
$4,156
Boston Scientific Corporation
$3,061
ABIOMED
$2,845
W. L. Gore & Associates, Inc.
$2,745
Abbott Laboratories
$2,241
Novartis Pharmaceuticals Corporation
$2,114
BIOTRONIK INC.
$1,523
Amgen Inc.
$1,112
Janssen Pharmaceuticals, Inc
$908
Endologix LLC
$892
BOSTON SCIENTIFIC CORPORATION
$866
Bard Peripheral Vascular, Inc.
$587
ARGON MEDICAL DEVICES, INC.
$509
Penumbra, Inc.
$402
AstraZeneca Pharmaceuticals LP
$370
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$367
Avinger Inc.
$291
Endologix, Inc.
$261
Surmodics, Inc.
$202
CORDIS US CORP.
$195
E.R. Squibb & Sons, L.L.C.
$157
PFIZER INC.
$149
AtriCure, Inc.
$142
Philips North America LLC
$138
Boehringer Ingelheim Pharmaceuticals, Inc.
$137
Allergan Inc.
$135
Novo Nordisk Inc
$126
Regeneron Healthcare Solutions, Inc.
$121
Biosense Webster, Inc.
$119
Cardinal Health 200, LLC
$106
Terumo Medical Corporation
$93
AngioDynamics, Inc.
$86
Bayer HealthCare Pharmaceuticals Inc.
$85
CARDIVA MEDICAL, INC.
$84
Opsens Inc.
$73
Inspire Medical Systems, Inc.
$69
Tactile Systems Technology Inc
$67
Merck Sharp & Dohme Corporation
$65
SANOFI-AVENTIS U.S. LLC
$61
Merck Sharp & Dohme LLC
$45
Chiesi USA, Inc.
$45
ATRICURE, INC.
$38
Lundbeck LLC
$34
SCPHARMACEUTICALS INC.
$32
Esperion Therapeutics, Inc.
$26
Amarin Pharma Inc.
$25
Gilead Sciences, Inc.
$23
Baylis Medical Technologies Inc.
$23
Actelion Pharmaceuticals US, Inc.
$23
Vifor Pharma, Inc.
$18
Kerecis Limited
$16
CVRx, Inc.
$15
Kiniksa Pharmaceuticals International, plc
$14
LifeWatch Services Inc
$14
Kowa Pharmaceuticals America, Inc.
$12
Top 3 companies account for 70.2% of all-time payments
Associated products mentioned in payments ›
(0843) Laser Parts Other · (4066) Tack Endo Sys ATK · (5027) Intact Vascular Und · (6346) Intrasight Mobile · (6366) Sync · (6554) Periph Vasc Undiv · (6585) Omniwire · (8329) IGT D FM · (8912) Spectranetics Undiv · (9270) Lasers · (9281) Turbo Elite · (9282) Turbo Power · (9284) Stellarex · (9520) IGT Devices Undivided · (BR5) Peripheral IVUS · ABRE · AFX · ANGIOJET · ANGIOVAC · ATRICURE ATRICLIP LAA EXCLUSION · Abre · Adempas · Alto Abdominal Stent Graft System · AngioVac · Aptus Heli-FX · Arcalyst · Azure · BIOMONITOR · BRILINTA · BYSTOLIC · Barostim Neo System · CAMZYOS · CARDIOMEMS · CARDIVA VASCADE 5F VCS · CARDIVA VASCADE MVP VVCS 6-12F · CHANTIX · CHOCOLATE PTA BALLOON CATHETER · CLOT MGMT · CONCERTOTM · COREVALVE EVOLUT R · CT THROMBECTOMY SYSTEM KIT · Cardiac Monitoring Suite · CardioMEMS HF System · Carto 3 System · ClosureFast · Concerto-NV · CoreValve Evolut · Coronary Orbital Atherectomy System · DIAMONDBACK PERIPHERAL · Diamondback Coronary · Diamondback Peripheral · EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) · ELIQUIS · ENDOCROSS Device · ENTRESTO · EVKEEZA · EVOQUE · Edwards SAPIEN 3 Transcatheter Heart Valve · Edwards SAPIEN 3 Ultra Transcatheter Heart Valve · Endurant · FARXIGA · FEMOSTOP · FFR LINK · FLOWMET · FLOWTRIEVER CATHETER · FUROSCIX · Flexitouch Plus · FlowMet · GENERAL STENTS · GENERAL ULTRASOUND · GENERAL - ATHERECTOMY · GENERAL - STENTS · GENERAL ATHERECTOMY · GENERAL STENTS · GENERAL THERAPIES · GENERAL ULTRASOUND · GORE EXCLUDER Iliac Branch Endoprosthesis · GORE TAG Conformable Thoracic Endoprosthesis · GORE TAG Thoracic Branch Endoprosthesis · GORE TAG Thoracic Endoprosthesis · GORE VIABAHN Endoprosthesis with Heparin · GUIDEZILLA · General - Stents · HAWKONE · HawkOne · HemoSphere · IGT D Peripheral · IN.PACT ADMIRAL · IN.PACT Admiral · INSPIRE · Impella · Indigo System · JARDIANCE · KENGREAL · Kerecis Omega3 SurgiClose · LEQVIO · LINZESS · LOTUS EDGE · LUTONIX · Legacy · LifeVest · Livalo · MICRA · MULTAQ · Mitra Clip system · Mynx Venous VCD · MynxGrip Vascular Closure Device · NEXLETOL · NHancer Rx · NORTHERA · NURTEC ODT · OPSUMIT · OPTICROSS · OPTION · OPTOWIRE · OptoWire · Orsiro Mission · Ovation · Ovation iX Iliac Stent Graft · PANTHERIS · PERCLOSE PROSTYLE · PK Papyrus · PRADAXA · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Penumbra System · Peripheral Orbital Atherectomy System · Pounce Thrombectomy · QT Vascular Chocolate PTA Balloon · RIPTIDE · ROTABLATOR · RYBELSUS · Repatha · Resolute · Rotarex · Rybelsus · S · SAPIEN 3 Ultra RESILIA · SYNERGY · SYNERGY ABLATION SYSTEM · Sublime 014 Rx PTA Balloon Dilatation Catheter · Supera peripheral stent system · TURBOHAWK · VENOVO · VERQUVO · VIABAHN Endoprosthesis · VRAYLAR · VYNDAQEL · Valiant Captivia · Valiant Navion · Vascepa · Veltassa · VenaSeal · VersaCross Access Solution · WATCHMAN · WATCHMAN FLX · WOLVERINE · XACT · XARELTO · Zero Gravity
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
6,092
County median income
$81,797
Nearest hospital to ZIP centroid (approximate)
JESSE BROWN VA MEDICAL CENTER - VA CHICAGO HEALTHCARE SYSTEM
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. Stewart is a clinical cardiology specialist, with above-average Medicare volume (top 6% 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. Stewart experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Stewart performed 1,528 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. Stewart receive payments from pharmaceutical companies?
Yes. Dr. Stewart received a total of $125,217 from 60 companies across 992 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. Stewart's costs compare to other internal medicine physicians in Chicago?
Dr. Stewart's average Medicare payment per service is $102. 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. Stewart) 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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