Medicare Enrolled
Dr. James Chambers, D.O.
Cardiovascular Disease · Flint, MI
Practice pattern: Electrophysiology & Cardiac
— Practice combining electrophysiology and cardiac services
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. Chambers 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. Chambers
Dr. James Chambers is a cardiovascular disease specialist in Flint, MI, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chambers performed 4,929 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Chambers received a total of $19,406 from 55 pharmaceutical and/or device companies across 748 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. Chambers 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 6% volume in MI
$19,406 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗4,929
Medicare services
Top 6% in MI for cardiovascular disease
Not available
Unique patients (not deduplicated)
$71
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 |
|---|---|---|---|
| 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. |
861 | $9 | $44 |
| 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. |
748 | $87 | $136 |
| 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. |
409 | $62 | $125 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
342 | $132 | $500 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
336 | $43 | $65 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
314 | $117 | $347 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
229 | $18 | $52 |
| Remote monitoring of implantable heart rhythm device Evaluation of data transmitted remotely from an implantable cardiovascular monitor, such as a loop recorder or subcutaneous cardiac rhythm monitor, over a period up to 30 days. |
229 | $54 | $150 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
199 | $15 | $75 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
175 | $47 | $170 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
169 | $325 | $850 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
150 | $22 | $60 |
| 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. |
114 | $108 | $213 |
| Heart muscle strain imaging | 110 | $25 | $80 |
| 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. |
100 | $52 | $90 |
| 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. |
91 | $102 | $200 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
59 | $55 | $136 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
55 | $19 | $46 |
| Remote evaluation of implantable defibrillator system Remote assessment of a single, dual, or multiple lead implantable defibrillator system within 90 days of the previous evaluation. |
49 | $25 | $115 |
| Aminophylline injection, up to 250 mg Administration of aminophylline medication via injection for a dose of up to 250 mg. |
43 | $1 | $1 |
| 30-day continuous ECG with patient-triggered event transmission and review This procedure involves continuous electrocardiogram monitoring for up to 30 days, including the transmission of patient-triggered events. A healthcare professional reviews the data and provides a report. |
38 | $620 | $1,400 |
| 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. |
31 | $94 | $150 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
22 | $45 | $86 |
| Cardiac catheterization | 21 | $214 | $600 |
| 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. |
18 | $125 | $184 |
| Programming of dual lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with two leads to ensure proper function. |
17 | $59 | $145 |
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.
16.9% high complexity
23.8% medium
59.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$19,406
Total received (2018-2024)
Avg $2,772/year across 7 years
Top 14% in MI for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
55
Companies
748
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
$3,700
2023
$3,562
2022
$2,991
2021
$2,646
2020
$1,577
2019
$2,475
2018
$2,456
Payments by company (2024)
Medtronic, Inc.
$746
Novartis Pharmaceuticals Corporation
$401
Amgen Inc.
$392
E.R. Squibb & Sons, L.L.C.
$228
AstraZeneca Pharmaceuticals LP
$188
Bayer Healthcare Pharmaceuticals Inc.
$177
ATRICURE, INC.
$174
Boehringer Ingelheim Pharmaceuticals, Inc.
$164
SCPHARMACEUTICALS INC.
$164
Lexicon Pharmaceuticals, Inc.
$162
Merck Sharp & Dohme LLC
$146
PFIZER INC.
$142
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$122
Kiniksa Pharmaceuticals International, plc
$108
Janssen Pharmaceuticals, Inc
$85
Alnylam Pharmaceuticals Inc.
$76
Inari Medical, Inc.
$70
Novo Nordisk Inc
$57
Inspire Medical Systems, Inc.
$40
SANOFI-AVENTIS U.S. LLC
$20
Actelion Pharmaceuticals US, Inc.
$18
Abbott Laboratories
$18
Top 3 companies account for 41.6% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic, Inc.
$3,225
Medtronic Vascular, Inc.
$1,914
Amgen Inc.
$1,646
Novartis Pharmaceuticals Corporation
$1,401
Janssen Pharmaceuticals, Inc
$945
PFIZER INC.
$864
Boehringer Ingelheim Pharmaceuticals, Inc.
$807
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$749
Medicure Pharma Inc.
$644
Abbott Laboratories
$610
Actelion Pharmaceuticals US, Inc.
$509
E.R. Squibb & Sons, L.L.C.
$482
Merck Sharp & Dohme LLC
$474
AstraZeneca Pharmaceuticals LP
$437
Amarin Pharma Inc.
$420
BIOTRONIK INC.
$302
SANOFI-AVENTIS U.S. LLC
$268
Regeneron Healthcare Solutions, Inc.
$254
Alnylam Pharmaceuticals Inc.
$233
Gilead Sciences, Inc.
$219
Bayer Healthcare Pharmaceuticals Inc.
$195
ABIOMED
$177
Lexicon Pharmaceuticals, Inc.
$177
Boston Scientific Corporation
$175
ATRICURE, INC.
$174
SCPHARMACEUTICALS INC.
$164
Bayer HealthCare Pharmaceuticals Inc.
$139
Shockwave Medical, Inc
$131
Merck Sharp & Dohme Corporation
$130
Penumbra, Inc.
$116
Kiniksa Pharmaceuticals International, plc
$108
Esperion Therapeutics, Inc.
$103
Novo Nordisk Inc
$100
Astellas Pharma US Inc
$98
Lundbeck LLC
$98
Kiniksa Pharmaceuticals, Ltd.
$97
Cook Medical LLC
$92
ARBOR PHARMACEUTICALS, INC.
$83
Daiichi Sankyo Inc.
$77
BOSTON SCIENTIFIC CORPORATION
$73
Inari Medical, Inc.
$70
GENZYME CORPORATION
$61
AcelRx Pharmaceuticals, Inc.
$49
iRhythm Technologies, Inc.
$46
Arbor Pharmaceuticals, Inc.
$45
Inspire Medical Systems, Inc.
$40
Aziyo Biologics, Inc.
$39
Relypsa, Inc.
$30
Kestra Medical Technology Services, Inc.
$24
Cardiovascular Systems Inc.
$23
Chiesi USA, Inc.
$20
Bardy Diagnostics, Inc.
$16
ARALEZ PHARMACEUTICALS US INC.
$13
HeartFlow, Inc.
$12
Kowa Pharmaceuticals America, Inc.
$11
Top 3 companies account for 35.0% of all-time payments
Associated products mentioned in payments ›
ATRICLIP LAA EXCLUSION SYSTEM · Achieve · Acticor 7 VR-T DX · Adempas · Advisa · Amplia MRI · Arcalyst · Assure WCD · BRILINTA · Bidil · BioMonitor · CAMZYOS · CARDIOMEMS · CHANTIX · COOK MEDICAL ANGIOPLASTY · COREVALVE EVOLUT R · CareLink Express · Carnation Ambulatory Monitor · CoreValve Evolut · Corlanor · Coronary Orbital Atherectomy System · DSUVIA · ECM · ECM Patch · ELIQUIS · EMBLEM MRI S-ICD · ENTRESTO · EVKEEZA · Edarbi · Edarbyclor · FABRAZYME · FARXIGA · FLOWTRIEVER CATHETER · FUROSCIX · HeartMate 3 Left Ventricular Assist Device · HeartMate 3 Left Ventricular Dev · INJECTAFER · INSPIRE · Impella · Indigo System · Inpefa · JARDIANCE · KENGREAL · Kerendia · LEQVIO · LEXISCAN · LINQ II · LUX DX · LifeVest · Livalo · MULTAQ · Micra · NEXLETOL · NORTHERA · ONPATTRO · ONYX FRONTIER · OPSUMIT · OPSUMIT MACITENTAN · Ozempic · PRADAXA · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Pouch · Ranexa · ReDS · Repatha · Resolute · Reveal LINQ · Rivacor · Rybelsus · S · SEEQ · SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER · Solia · THORATEC HEARTMATE 3 LVAS IMPLANT KIT · TYRX · UPTRAVI · VERQUVO · VYNDAQEL · Vascepa · Veltassa · WAINUA · WATCHMAN · WATCHMAN Access System · WATCHMAN FLX · XARELTO · ZEPOSIA · ZIO XT Patch · ZONTIVITY
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
34
County median income
$60,673
Nearest hospital to ZIP centroid (approximate)
HURLEY MEDICAL CENTER
2.2 mi
2.2 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. Chambers is an electrophysiology & cardiac specialist, with above-average Medicare volume (top 6% in MI), 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. Chambers experienced with electrocardiogram (ekg), 12-lead?
Based on Medicare claims data, Dr. Chambers performed 861 electrocardiogram (ekg), 12-lead 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. Chambers receive payments from pharmaceutical companies?
Yes. Dr. Chambers received a total of $19,406 from 55 companies across 748 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. Chambers's costs compare to other cardiologists in Flint?
Dr. Chambers's average Medicare payment per service is $71. 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. Chambers) 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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