Dr. Mark J. Shen, M.D.
Cardiac Electrophysiology (Clinical Cardiac Electrophysiology Physician)
- Medicare participating
At a glance
- Years since graduation
- 20
- In the NPI registry since
- 2011
- Medicare patients seen, 2024
- 2,383
Licensed in Illinois since 2013, according to the Illinois Department of Financial and Professional Regulation. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2011Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Clinical Cardiac Electrophysiology Physician primary
IL license 036133915 (first issued 2013; active) -
Cardiovascular Disease Physician
IL license 036133915 (first issued 2013; active)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Genesis Medical Center-Davenport Davenport, IA
- Genesis Hlth System DBA Genesis MDl Ctr-Illini Silvis, IL
- Trinity Rock Island Rock Island, IL
- Trinity - Bettendorf Bettendorf, IA
- Trinity Muscatine Muscatine, IA
Medical groups
- Genesis Health System (261 clinicians)
- Genesis Health System (224 clinicians)
- Trinity Medical Center (99 clinicians)
- Unity Healthcare (67 clinicians)
- Cardiovascular Medicine PLLC (50 clinicians)
- Genesis Medical Center, Aledo (15 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 2,383
- Services billed
- 16,620
- Patients’ average age
- 77
| Service | Times | Patients |
|---|---|---|
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 3,720 | 38 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 1,353 | 881 |
| Established patient office or other outpatient visit, 30-39 minutes | 1,097 | 832 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days | 619 | 335 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 576 | 433 |
| Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days | 452 | 245 |
| Programming of dual lead pacemaker system | 399 | 250 |
| Anticoagulant management of patient taking warfarin | 369 | 35 |
| Injection, regadenoson, 0.1 mg | 332 | 83 |
| Physician review, interpretation, and patient management of home inr testing for patient with either mechanical heart valve(s), chronic atrial fibrillation, or venous thromboembolism who meets medicare coverage criteria; testing not occurring more frequent | 281 | 33 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 17 companies reported 102 payments worth $4,454 in total to this clinician.
| Biotronik Inc. | $1,119 |
|---|---|
| Boston Scientific Corporation | $1,013 |
| Medtronic, Inc. | $651 |
| Abbott Laboratories | $322 |
| E.r. Squibb & Sons, L.l.c. | $217 |
| Biosense Webster, Inc. | $214 |
| Cvrx, Inc. | $159 |
| Zoll Services LLC (a/k/a Zoll Lifecor Corp) | $123 |
| Food and Beverage | $3,446 |
|---|---|
| Travel and Lodging | $1,008 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Biotronik Inc. Aug 26, 2025 | Travel and Lodging travel to Portland, OR · in-kind Company’s descriptionACH DEBIT | $424 |
| Biotronik Inc. Aug 22, 2025 | Travel and Lodging travel to Portland, OR · in-kind | $293 |
| Biotronik Inc. Aug 21, 2025 | Travel and Lodging travel to Portland, OR · in-kind | $291 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $15,319 in research payments for these studies, mostly to the institutions running them.
- Real-World Experience - Barostim™ Advancing the Level of Clinical Evidence (REBALANCE Registry)
Cvrx, Inc. · Terminated · NCT04502316
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.