Doctor profile · Federal record
Dr. Marc Larsen, MD
Emergency Medical Services (Emergency Medicine) Physician (CMS: Emergency Medicine) · Kansas City, MO
- NPI 1144236159
- Accepts Medicare
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4401 Wornall RD
Kansas City, MO 64111
(816) 932-2047 - Mailing address
-
Po Box 78009
St Louis, MO 63178
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- March 3, 2008
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207PE0004X — NUCC code
- State license (1)
- Missouri #2006010971
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1144236159. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
477
Distinct HCPCS
5
Medicare allowed
$56,473
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 229 | 226 | $172 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 121 | 114 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 80 | 79 | $113 | |
99291 |
Critical care, first 30-74 minutes | 29 | 29 | $202 | |
99283 |
Emergency department visit with low level of medical decision making | 18 | 18 | $64 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 91. This provider delivers 5.2× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
92
Patients
92
Total drug cost
$667
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 27 | 27 | $158 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 23 | 23 | $127 |
| Prednisone | Generic | 16 | 16 | $44 |
| Doxycycline Hyclate | Generic | 15 | 15 | $228 |
| Ondansetron Odt (Ondansetron) | Brand | 11 | 11 | $110 |
Hospital affiliations
Frequently asked questions
What is Dr. Marc Larsen's medical specialty?
Dr. Marc Larsen practices Emergency Medical Services (Emergency Medicine) Physician in Kansas City, MO.
Where does Dr. Marc Larsen practice?
Dr. Marc Larsen practices at 4401 Wornall RD, Kansas City, MO 64111. Office phone: 8169322047.
What is Dr. Marc Larsen's NPI?
Dr. Marc Larsen's National Provider Identifier (NPI) is 1144236159, issued by NPPES.
Does Dr. Marc Larsen accept Medicare assignment?
Yes. Dr. Marc Larsen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Marc Larsen commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.