Medicare Enrolled
Dr. Atif Hassan, MD
Cardiovascular Disease · 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. Hassan 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. Hassan
Dr. Atif Hassan is a cardiovascular disease specialist in Chicago, IL, with 13 years of NPI registration. Based on federal Medicare data, Dr. Hassan performed 2,708 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Hassan received a total of $6,076 from 30 pharmaceutical and/or device companies across 185 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. Hassan 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.
✓ 13 years of NPI registration
▲ Top 45% volume in IL
$6,076 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗2,708
Medicare services
Top 45% in IL for cardiovascular disease
Not available
Unique patients (not deduplicated)
$68
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. |
636 | $6 | $32 |
| 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. |
260 | $64 | $160 |
| 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. |
233 | $99 | $229 |
| 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. |
226 | $99 | $278 |
| 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. |
188 | $136 | $428 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
172 | $52 | $246 |
| 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. |
135 | $12 | $87 |
| 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. |
134 | $11 | $44 |
| 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. |
134 | $61 | $200 |
| Cardiac catheterization | 79 | $210 | $1,041 |
| 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. |
69 | $141 | $394 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while an electrocardiogram is monitored under physician supervision. |
63 | $16 | $92 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
63 | $11 | $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. |
49 | $133 | $371 |
| 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. |
42 | $83 | $332 |
| 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. |
38 | $509 | $2,148 |
| 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. |
35 | $106 | $293 |
| Intravascular ultrasound of heart vessel, initial An ultrasound procedure used to evaluate a blood vessel within the heart during a diagnostic or treatment procedure. |
30 | $63 | $336 |
| 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. |
24 | $82 | $254 |
| 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. |
17 | $78 | $319 |
| 2-day continuous ECG with professional review A two-day continuous electrocardiogram recording that includes a review by a healthcare professional. |
17 | $13 | $124 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
15 | $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. |
13 | $2 | $14 |
| Insertion of tube in left lower heart chamber, coronary artery and bypass graft for diagnosis with review by radiologist | 13 | $197 | $1,262 |
| 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. |
12 | $6 | $28 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 11 | $296 | $1,406 |
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.
11.6% high complexity
8.3% medium
80.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$6,076
Total received (2018-2024)
Avg $868/year across 7 years
Top 32% in IL for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
30
Companies
185
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
$763
2023
$983
2022
$1,583
2021
$1,494
2020
$312
2019
$565
2018
$376
Payments by company (2024)
Abbott Laboratories
$328
Lexicon Pharmaceuticals, Inc.
$67
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$57
Imperative Care, Inc
$53
Novartis Pharmaceuticals Corporation
$44
PFIZER INC.
$32
Boston Scientific Corporation
$28
AstraZeneca Pharmaceuticals LP
$26
Teleflex LLC
$25
Medtronic, Inc.
$24
Lilly USA, LLC
$23
Merck Sharp & Dohme LLC
$20
Boehringer Ingelheim Pharmaceuticals, Inc.
$19
Surmodics, Inc.
$16
Top 3 companies account for 59.3% of 2024 payments
All-time payments by company (2018-2024) ›
Cardiovascular Systems Inc.
$1,270
ABIOMED
$741
Abbott Laboratories
$684
Novartis Pharmaceuticals Corporation
$531
Siemens Medical Solutions USA, Inc.
$530
Inari Medical, Inc.
$406
Boston Scientific Corporation
$284
Terumo Medical Corporation
$204
Janssen Pharmaceuticals, Inc
$131
Lexicon Pharmaceuticals, Inc.
$129
AngioDynamics, Inc.
$115
Chiesi USA, Inc.
$114
Edwards Lifesciences Corporation
$109
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$99
AstraZeneca Pharmaceuticals LP
$94
Cardinal Health 200, LLC
$92
PFIZER INC.
$78
E.R. Squibb & Sons, L.L.C.
$71
Medtronic, Inc.
$61
Medtronic Vascular, Inc.
$59
Imperative Care, Inc
$53
Boehringer Ingelheim Pharmaceuticals, Inc.
$44
BOSTON SCIENTIFIC CORPORATION
$39
Teleflex LLC
$25
Kiniksa Pharmaceuticals, Ltd.
$25
Lilly USA, LLC
$23
Merck Sharp & Dohme LLC
$20
Surmodics, Inc.
$16
Amgen Inc.
$16
LeMaitre Vascular, Inc.
$15
Top 3 companies account for 44.4% of all-time payments
Associated products mentioned in payments ›
ABRE · ACUSON S2000 Diagnostic Ultrasound System · ARROW · ARTEGRAFT VASCULAR GRAFT · AngioSeal · Arcalyst · BRILINTA · CAMZYOS · CorPath Imaging System · Corlanor · Coronary Orbital Atherectomy System · DIAMONDBACK CORONARY · DIAMONDBACK PERIPHERAL · Diamondback Coronary · Diamondback Peripheral · EKOSONIC · ELIQUIS · ELUVIA · ENTRESTO · ESPRIT · Edwards SAPIEN 3 Transcatheter Heart Valve · EnSite Precision Cardiac Mapping System · FARXIGA · FLOWTRIEVER CATHETER · GENERAL VASCULAR ACCESS · GENERAL - STRUCTURAL HEART · GLIDESHEATH SLENDER · HAWKONE · Impella · Inpefa · JARDIANCE · JETI PERIPHERAL CATHETER · KENGREAL · LEQVIO · LifeVest · MOUNJARO · PERCLOSE PROSTYLE · Peripheral Orbital Atherectomy System · Pounce Venous Thrombectomy System · R2P MISAGO · Resolute · S · SUPERA · SYMPHONY CATHETER · TR Band · VERQUVO · VYNDAQEL · 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
598
County median income
$81,797
Nearest hospital to ZIP centroid (approximate)
SWEDISH 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. Hassan is a clinical cardiology specialist, with moderate Medicare volume.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Hassan experienced with ekg interpretation and report?
Based on Medicare claims data, Dr. Hassan performed 636 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. Hassan receive payments from pharmaceutical companies?
Yes. Dr. Hassan received a total of $6,076 from 30 companies across 185 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. Hassan's costs compare to other cardiologists in Chicago?
Dr. Hassan's average Medicare payment per service is $68. 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. Hassan) 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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