NNAMDI ANUNOBI MD
NPI 1548767775
Internal Medicine - Critical Care Medicine in Saint Louis, MO
About Nnamdi Anunobi Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NNAMDI ANUNOBI MD (NPI 1548767775) is an individual critical care medicine provider in Saint Louis, Missouri, licensed in Missouri (2022031002) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, is affiliated with St Johns Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Nnamdi Anunobi Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Nnamdi Anunobi reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63131
- Reassigned Medicare billing, Missouri enrollment
- 82 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 215 clinicians in this Medicare group
O Fallon, IL 62269
- Reassigned Medicare billing, Illinois enrollment
- 99 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Johns Hospital
Acute Care Hospitals · Springfield, ILHillsboro Area Hospital
Critical Access Hospitals · Hillsboro, ILCarlinville Area Hospital
Critical Access Hospitals · Carlinville, ILMissouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOSt Lukes Hospital
Acute Care Hospitals · Chesterfield, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63110 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nnamdi Anunobi's NPI number?
The NPI number for Nnamdi Anunobi is 1548767775. It was assigned to this individual provider in the NPPES registry on April 13, 2018.
Where is Nnamdi Anunobi located?
Nnamdi Anunobi practices at 660 S Euclid Ave, Saint Louis, MO 63110. The listed phone number is (314) 454-8762.
What is Nnamdi Anunobi's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Critical Care Medicine, with taxonomy code 207RC0200X.
Is Nnamdi Anunobi enrolled in Medicare?
Yes. Nnamdi Anunobi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nnamdi Anunobi's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nnamdi Anunobi reassigns Medicare benefits to 3 organizations: Missouri Baptist Medical Center (Saint Louis, MO), Physician Specialists Of St Lukes LLC (Chesterfield, MO) and Cep America Illinois Intensivists (O Fallon, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nnamdi Anunobi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nnamdi Anunobi accept?
Health plans from Anthem Blue Cross and Blue Shield list Nnamdi Anunobi as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Nnamdi Anunobi affiliated with any hospitals?
According to CMS data, Nnamdi Anunobi is affiliated with St Johns Hospital, Hillsboro Area Hospital, Carlinville Area Hospital, Missouri Baptist Medical Center and St Lukes Hospital.
When was this NPI record last updated?
The NPPES record for Nnamdi Anunobi was last updated on September 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Nnamdi Anunobi, MD · NPI 1548767775
Critical Care Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 13, 2018.
## Identity
- **NPI:** 1548767775 (Entity type: Individual)
- **Enumerated:** April 13, 2018
- **Primary specialty:** Internal Medicine - Critical Care Medicine · taxonomy 207RC0200X
- **State license:** 2022031002 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 660 S EUCLID AVE, Saint Louis, MO 63110-1010
- **Phone:** (314) 454-8762
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Missouri Baptist Medical Center (NPI 1467461434, Saint Louis, MO); Physician Specialists Of St Lukes LLC (NPI 1235168410, Chesterfield, MO); Cep America Illinois Intensivists (NPI 1992204184, O Fallon, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** September 12, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1548767775) · Data from the CMS NPPES public registry.