Dr. Marc D. Larsen, MD
Emergency Medicine (Emergency Medical Services (Emergency Medicine) Physician)
- Medicare participating
At a glance
- Medical school
- University of Kansas School of Med (Kc/Wich/Sal) (2003)
- Years since graduation
- 23
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 507
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
- 2003Medical school: University of Kansas School of Med (Kc/Wich/Sal)
- 2006Registered 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
-
Emergency Medical Services (Emergency Medicine) Physician primary
MO license 2006010971
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- St Lukes Hospital of Kansas City Kansas City, MO
- Saint Luke's East Hospital Lees Summit, MO
- Saint Luke's South Hospital Overland PArk, KS
Medical groups
- Mep Kansas LLC (60 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
- 507
- Services billed
- 709
- Patients’ average age
- 75
| Service | Times | Patients |
|---|---|---|
| Emergency department visit with high level of medical decision making | 229 | 226 |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 121 | 114 |
| Emergency department visit with moderate level of medical decision making | 80 | 79 |
| Critical care, first 30-74 minutes | 29 | 29 |
| Emergency department visit with low level of medical decision making | 18 | 18 |
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
| Drug | Prescriptions |
|---|---|
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Kansas City, MO | 44 |
| Cephalexin Other prescribers in Kansas City, MO | 33 |
| Prednisone Other prescribers in Kansas City, MO | 18 |
| Doxycycline Hyclate Other prescribers in Kansas City, MO | 17 |
| Ondansetron Odt (ondansetron) Other prescribers in Kansas City, MO | 17 |
| Methocarbamol Other prescribers in Kansas City, MO | 16 |
| Amlodipine Besylate Other prescribers in Kansas City, MO | 11 |
| Amoxicillin-Clavulanate Potass (amoxicillin/potassium clav) Other prescribers in Kansas City, MO | 11 |
| Metoprolol Succinate Other prescribers in Kansas City, MO | 11 |
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, 2 companies reported 3 payments worth $296 in total to this clinician.
| Medtronic, Inc. | $182 |
|---|---|
| Abbott Laboratories | $114 |
| Travel and Lodging | $182 |
|---|---|
| Food and Beverage | $114 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Medtronic, Inc. Dec 6, 2025 | Travel and Lodging INTELLIS ADAPTIVESTIM · Spinal Cord Neurostimulation · travel to Detroit, MI · in-kind | $138 |
| Medtronic, Inc. Dec 7, 2025 | Travel and Lodging INTELLIS ADAPTIVESTIM · Spinal Cord Neurostimulation · travel to Detroit, MI · in-kind | $44.12 |
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.