Michael Fullenkamp, M.D.
NPI 1053408864 · Emergency Medicine Physician · St. Louis, MO
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Fullenkamp, M.D. is a Emergency Medicine Physician provider in St. Louis, MO (NPI 1053408864).
Provider details
- NPI number
- 1053408864
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2005015807 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
551 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 242 | $109 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 240 | $158 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 46 | $64 |
| Critical Care, First 30-74 Minutes99291 | 23 | $188 |
Typical Medicare-allowed amounts for these services range $64–$188 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 26 | 26 |
| Ondansetronbrand: Ondansetron Odt | 22 | 22 |
| Prednisone | 17 | 16 |
| Apixabanbrand: Eliquis | 12 | — |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 12 | 12 |
| Potassium Chloride | 12 | 11 |
| Baclofen | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-05
- Last updated
- 2009-09-08
Frequently asked questions
- What is Michael Fullenkamp's NPI number?
- Michael Fullenkamp's National Provider Identifier (NPI) is 1053408864, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Fullenkamp's specialty?
- Michael Fullenkamp is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Fullenkamp located?
- Michael Fullenkamp's practice location on file with NPPES is 1 Barnes Jewish Hospital Plaza, St. Louis, MO 63110.
- What is Michael Fullenkamp's phone number?
- The practice phone number listed in the NPPES registry for Michael Fullenkamp is (314) 294-0446.
- Does Michael Fullenkamp accept Medicare?
- Michael Fullenkamp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Fullenkamp's NPI active?
- Yes — Michael Fullenkamp's NPI (1053408864) is active in the NPPES registry as of the last update on 2009-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.