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Dr. Christopher A. Semder, MD

Interventional Cardiology (Interventional Cardiology Physician)

  • Medicare participating

At a glance

Years since graduation
19
In the NPI registry since
2007
Medicare patients seen, 2024
1,982

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. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 2007Medical school: Jc Edwards School of Medicine, Marshall University
  • 2007Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

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

  • Interventional Cardiology Physician primary
    KY license 47319
  • Cardiovascular Disease Physician
    KY license 47319
  • Hospitalist Physician
    TN license 45369

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Interventional Cardiology per capita by county →

Where they work

Hospitals

Medical groups

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
1,982
Services billed
3,688
Patients’ average age
77
Most frequent Medicare services, 2023
ServiceTimesPatients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only1,9791,592
Established patient office or other outpatient visit, 30-39 minutes539474
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report510463
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes251153
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes9391
Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist5959
New patient office or other outpatient visit, 45-59 minutes5757
Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch3428
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes2827
Heart rhythm recording of continous external ekg over 8-15 days2121

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, 7 companies reported 12 payments worth $611 in total to this clinician.

By type
Food and Beverage$611

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.

Who received the most in Kentucky →

Industry-funded research

Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $4,767 in research payments for these studies, mostly to the institutions running them.

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.

Other Interventional Cardiology clinicians in Louisville

Sources

NPI registry (CMS NPPES, November 2026; record last updated December 2, 2020), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1487858965. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.