Quick answers
- Does Nnamdi Anunobi accept Medicare assignment?
- Yes. Medicare's clinician data says Nnamdi Anunobi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Nnamdi Anunobi see?
- In 2024, CMS data shows 50 Original Medicare patients and 93 services for Nnamdi Anunobi. This counts Original Medicare only and measures volume, not quality.
- What is Nnamdi Anunobi's NPI number?
- 1548767775. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Nnamdi Anunobi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 50 |
|---|---|
| Services billed to Medicare | 93 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Critical care, first 30-74 minutes (99291)71 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Heart failure64%
- Ischemic heart disease60%
- Diabetes54%
- Chronic kidney disease54%
Hospitals where Nnamdi Anunobi works
Medicare's Facility Affiliation Data lists Nnamdi Anunobi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Carlinville Area HospitalCarlinville, IL · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 141347
- Hillsboro Area HospitalHillsboro, IL · Critical Access Hospital · Emergency services: listed by Medicare · CCN 141332
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 260108
- St Johns HospitalSpringfield, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140053
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 260179
Practice locations
Addresses where Nnamdi Anunobi is enrolled with Medicare (CMS data updated October 2, 2026).
- 232 S Woods Mill RdChesterfield, MO 63017 (314) 434‑1500
- 3015 N Ballas RdSaint Louis, MO 63131 (314) 996‑5000
- 800 E Carpenter StSpringfield, IL 62702 (217) 544‑6464
Group practices
Medicare enrollment lists Nnamdi Anunobi as a member of these groups (CMS data updated October 2, 2026).
- Missouri Baptist Medical Center124 clinicians in the group
- Physician Specialists of St Lukes LLC82 clinicians in the group
- Cep America Illinois Intensivists48 clinicians in the group
Specialties
- Critical Care (Intensivists)primary
Find other Critical Care (Intensivists) doctors in Missouri →
Other critical care doctors in Chesterfield
Clinicians with the same Medicare primary specialty in Chesterfield, MO — not a recommendation.
Other clinicians in Missouri Baptist Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1548767775 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians