Medicare Enrolled
Dr. Jack Chamberlin, M.D.
Cardiovascular Disease · Elk Grove Village, IL
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Chamberlin 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. Chamberlin
Dr. Jack Chamberlin is a cardiovascular disease specialist in Elk Grove Village, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chamberlin performed 2,659 Medicare services across 1,831 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chamberlin received a total of $71,660 from 31 pharmaceutical and/or device companies across 173 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chamberlin 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 in practice
▲ Top 36% volume in IL
$71,660 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,659
Medicare services
Top 36% in IL for cardiovascular disease
1,831
Unique beneficiaries
$87
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~133 Medicare services per year of practice
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. |
862 | $95 | $230 |
| 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. |
387 | $66 | $162 |
| 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. |
176 | $139 | $311 |
| 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. |
146 | $10 | $68 |
| 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. |
146 | $11 | $129 |
| Anticoagulant management for warfarin Management of anticoagulant therapy for a patient taking warfarin. This service involves monitoring and adjusting the medication regimen. |
121 | $9 | $33 |
| 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. |
87 | $4 | $35 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
85 | $12 | $41 |
| 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. |
75 | $99 | $225 |
| 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. |
73 | $108 | $297 |
| 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. |
58 | $139 | $439 |
| 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. |
56 | $130 | $356 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
33 | $31 | $165 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
33 | $27 | $203 |
| 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. |
32 | $71 | $211 |
| 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. |
27 | $62 | $157 |
| 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. |
26 | $78 | $267 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
26 | $18 | $62 |
| Arterial plaque removal in leg A procedure to remove plaque buildup from the arteries in the leg to restore blood flow. |
24 | $474 | $1,822 |
| New patient office visit, complex (60-74 min) | 24 | $171 | $449 |
| 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. |
20 | $444 | $1,708 |
| 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. |
15 | $83 | $218 |
| Artery plaque removal and stent insertion in leg This procedure involves removing plaque buildup from leg arteries and placing stents to keep the blood vessels open. |
14 | $635 | $2,189 |
| Artery stent insertion with radiologist review A minimally invasive procedure to place a stent in an artery outside the heart, neck, brain, chest, or legs. A radiologist reviews the procedure to ensure proper placement. |
14 | $351 | $1,378 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
14 | $79 | $274 |
| Cardiac catheterization | 14 | $201 | $672 |
| Insertion of tube in right and left heart chambers and coronary artery for diagnosis with review by radiologist | 13 | $274 | $856 |
| Groin artery exposure for graft delivery Surgical exposure of the artery in the groin area to allow for the placement or delivery of a graft. |
12 | $122 | $495 |
| Groin artery stent insertion, initial vessel A procedure to place a stent in the initial artery of the groin to keep it open and maintain blood flow. |
12 | $403 | $1,594 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
12 | $19 | $139 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
11 | $151 | $546 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
11 | $31 | $109 |
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. A higher procedure volume generally indicates more experience with that procedure.
2.8% high complexity
8.6% medium
88.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$71,660
Total received (2018-2024)
Avg $10,237/year across 7 years
Top 7% in IL for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
31
Companies
173
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$53,199 (74.2%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$11,248 (15.7%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$7,213 (10.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$899
2023
$2,124
2022
$1,093
2021
$2,263
2020
$121
2019
$32,027
2018
$33,133
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medtronic, Inc.
$228
Bard Peripheral Vascular, Inc.
$131
Abbott Laboratories
$120
Surmodics, Inc.
$90
ShockWave Medical, Inc
$78
ABIOMED
$75
Boston Scientific Corporation
$43
Bolton Medical Inc
$42
Cook Medical LLC
$35
Veryan Medical Incorporated
$24
E.R. Squibb & Sons, L.L.C.
$18
BIOTRONIK INC.
$16
Top 3 companies account for 53.2% of 2024 payments
All-time payments by company (2018-2024) ›
Janssen Pharmaceuticals, Inc
$47,472
Endologix, Inc.
$9,451
Novartis Pharmaceuticals Corporation
$5,531
Endologix LLC
$2,948
Siemens Medical Solutions USA, Inc.
$1,841
Medtronic, Inc.
$1,279
Veryan Medical Incorporated
$444
LimFlow Inc.
$427
Abbott Laboratories
$269
W. L. Gore & Associates, Inc.
$235
LivaNova USA, Inc.
$229
Bard Peripheral Vascular, Inc.
$186
Silk Road Medical, Inc.
$180
Avinger Inc.
$149
Medtronic Vascular, Inc.
$135
Endologix, LLC
$103
Surmodics, Inc.
$90
ABIOMED
$89
Boston Scientific Corporation
$84
ShockWave Medical, Inc
$78
BIOTRONIK INC.
$74
Cardiovascular Systems Inc.
$62
Philips Electronics North America Corporation
$62
Venclose Inc.
$58
Cook Medical LLC
$47
Bolton Medical Inc
$42
SANOFI-AVENTIS U.S. LLC
$24
BOSTON SCIENTIFIC CORPORATION
$22
AbbVie, Inc.
$19
E.R. Squibb & Sons, L.L.C.
$18
AngioDynamics, Inc.
$13
Top 3 companies account for 87.2% of all-time payments
Associated products mentioned in payments ›
(9284) Stellarex · ABSOLUTE PRO · AFX · AFX2 Bifurcated Endograft System · Alto Abdominal Stent Graft System · Artis pheno · Artis zeego · BioMimics · BioMimics 3D Vascular Stent System · CARDIOMEMS · COOK MEDICAL ADVANCED TECH · ClosureFast · Conformable TAG Thoracic Endoprosthesis · ELIQUIS · ENDURANT IIS · ENROUTE Transcarotid Neuroprotection System · ENTRESTO · EXCLUDER AAA Endoprosthesis · HAWKONE · HeartMate 3 Left Ventricular Assist Device · IN.PACT Admiral · Impella · LIMFLOW SYSTEM · LifeSPARC System · NHancer Rx · Orsiro Mission · Ovation · Ovation iX Iliac Stent Graft · PANTHERIS · PRALUENT · PRO-Kinetic Energy · Passeo-18 · Perclose ProGlide suture mediated closure system · Pounce Thrombectomy · Pounce Venous Thrombectomy System · RELAY THORACIC STENT-GRAFT WITH PLUS DELIVERY SYSTEM · Rotarex · RotarexS 6 F x 135 cm · SC2000 · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Synthroid · TandemLife · VALIANT CAPTIVIA · VARITHENA · VIABAHN VBX Balloon Expandable Endoprosthesis · VenaSeal · XARELTO · ZILVER PTX
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. 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 →
The majority of payments (74%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in cardiovascular disease and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 7% for cardiovascular disease in IL.
Geographic Context
Cardiologists within 10 mi
602
Per 100K population
11.6
County median income
$81,797
Nearest hospital
ALEXIAN BROTHERS MEDICAL CENTER 1
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | 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. Chamberlin is a clinical cardiology specialist, with moderate Medicare volume, with speaking/promotional industry engagement in the top 7% of IL peers, 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. Chamberlin experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chamberlin performed 862 office visit, established patient (30-39 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Chamberlin receive payments from pharmaceutical companies?
Yes. Dr. Chamberlin received a total of $71,660 from 31 companies across 173 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. 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. Chamberlin's costs compare to other cardiologists in Elk Grove Village?
Dr. Chamberlin's average Medicare payment per service is $87. 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. Chamberlin) 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 a long track record of practice, Medicare participation, and industry disclosure. 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?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): 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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