CHISOM EZE MD
NPI 1821527649
Internal Medicine in Saint Louis, MO
About Chisom Eze Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHISOM EZE MD (NPI 1821527649) is an individual internal medicine provider in Saint Louis, Missouri, licensed in Missouri (2020024378) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Saint Louis, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Chisom Eze 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
5Medicare enrollment records show Chisom Eze reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63128
- Reassigned Medicare billing, Missouri enrollment
- 228 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 326 clinicians in this Medicare group
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 435 clinicians in this Medicare group
Festus, MO 63028
- Reassigned Medicare billing, Missouri enrollment
- 299 clinicians in this Medicare group
Washington, MO 63090
- Reassigned Medicare billing, Missouri enrollment
- 261 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 8
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63127 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Chisom Eze's NPI number?
The NPI number for Chisom Eze is 1821527649. It was assigned to this individual provider in the NPPES registry on June 6, 2017.
Where is Chisom Eze located?
Chisom Eze practices at 3637 S Geyer Rd, Saint Louis, MO 63127. The listed phone number is (314) 525-1887.
What is Chisom Eze's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Chisom Eze enrolled in Medicare?
Yes. Chisom Eze 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 Chisom Eze's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chisom Eze reassigns Medicare benefits to 5 organizations: Mercy Clinic East Communities (Saint Louis, MO), Mercy Clinic Adult Hospitalists - St. Louis, LLC (Saint Louis, MO), Mercy Hospitals East Communities (Saint Louis, MO), Mercy Clinic Adult Hospitalists- Jefferson, LLC (Festus, MO) and Mercy Clinic Adult Hospitalists - Washington, LLC (Washington, MO). 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 Chisom Eze's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Chisom Eze accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 2 other insurers list Chisom Eze 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.
When was this NPI record last updated?
The NPPES record for Chisom Eze was last updated on July 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Chisom Eze, MD · NPI 1821527649
Internal Medicine physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since June 6, 2017.
## Identity
- **NPI:** 1821527649 (Entity type: Individual)
- **Enumerated:** June 6, 2017
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 2020024378 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3637 S GEYER RD, Saint Louis, MO 63127-1203
- **Phone:** (314) 525-1887 · **Fax:** (314) 525-1868
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Mercy Clinic East Communities (NPI 1720635329, Saint Louis, MO); Mercy Clinic Adult Hospitalists - St. Louis, LLC (NPI 1841235108, Saint Louis, MO); Mercy Hospitals East Communities (NPI 1851431738, Saint Louis, MO); Mercy Clinic Adult Hospitalists- Jefferson, LLC (NPI 1083052492, Festus, MO); Mercy Clinic Adult Hospitalists - Washington, LLC (NPI 1891943429, Washington, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** July 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1821527649) · Data from the CMS NPPES public registry.