ELIZABETH MARIE NANNINI
NPI 1104707736
Nurse Practitioner - Adult Health in Chesterfield, MO
About Elizabeth Marie Nannini NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELIZABETH MARIE NANNINI (NPI 1104707736) is an individual adult health provider in Chesterfield, Missouri, licensed in Missouri (2025039106) and active in the NPI registry since September 2025. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital South, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses
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
Elizabeth Marie Nannini 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 Reassignment
Medicare enrollment records show Elizabeth Nannini reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital South
Acute Care Hospitals · Saint Louis, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63017 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.
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
CHESTERFIELD, MO 63017
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 Elizabeth Nannini's NPI number?
The NPI number for Elizabeth Nannini is 1104707736. It was assigned to this individual provider in the NPPES registry on September 10, 2025.
Where is Elizabeth Nannini located?
Elizabeth Nannini practices at 15740 S Outer 40 Rd, Chesterfield, MO 63017. The listed phone number is (636) 237-4700.
What is Elizabeth Nannini's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Elizabeth Nannini enrolled in Medicare?
Yes. Elizabeth Nannini 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 organization bills Medicare for Elizabeth Nannini's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Nannini reassigns Medicare benefits to Mercy Aco Clinical Services Inc (Chesterfield, MO). The 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 Elizabeth Nannini's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Elizabeth Nannini accept?
Health plans from Anthem Blue Cross and Blue Shield list Elizabeth Nannini 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 Elizabeth Nannini affiliated with any hospitals?
According to CMS data, Elizabeth Nannini is affiliated with Mercy Hospital South.
When was this NPI record last updated?
The NPPES record for Elizabeth Nannini was last updated on September 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Elizabeth Marie Nannini · NPI 1104707736
Adult Health physician in Chesterfield, Missouri. Individual provider, active in the CMS NPPES registry since September 10, 2025.
## Identity
- **NPI:** 1104707736 (Entity type: Individual)
- **Enumerated:** September 10, 2025
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** 2025039106 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 15740 S OUTER 40 RD, Chesterfield, MO 63017-2004
- **Phone:** (636) 237-4700
## 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:** Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** September 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1104707736) · Data from the CMS NPPES public registry.