MARGARET MARY WYNN FNP-C
NPI 1306306865
Nurse Practitioner - Family in Chesterfield, MO
About Margaret Mary Wynn Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET MARY WYNN FNP-C (NPI 1306306865) is an individual family provider in Chesterfield, Missouri, licensed in Missouri (2018027826) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
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
Margaret Mary Wynn Fnp-c 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
2Medicare enrollment records show Margaret Wynn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 263 clinicians in this Medicare group
Cuba, MO 65453
- Reassigned Medicare billing, Missouri enrollment
- Also billed through NPI 1245277631 (Missouri)
- 1,487 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.
Physician 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
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 Margaret Wynn's NPI number?
The NPI number for Margaret Wynn is 1306306865. It was assigned to this individual provider in the NPPES registry on March 21, 2019.
Where is Margaret Wynn located?
Margaret Wynn practices at 15740 South Outer Road, Chesterfield, MO 63017. The listed phone number is (636) 237-4200.
What is Margaret Wynn's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Margaret Wynn enrolled in Medicare?
Yes. Margaret Wynn 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 Margaret Wynn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Wynn reassigns Medicare benefits to 2 organizations: Mercy Aco Clinical Services Inc (Chesterfield, MO) and Mercy Clinic Springfield Communities (Cuba, 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 Margaret Wynn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Wynn accept?
Health plans from Arkansas Blue Cross and Blue Shield, Health Advantage and Octave list Margaret Wynn 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 Margaret Wynn was last updated on May 14, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Margaret Mary Wynn, FNP-C · NPI 1306306865
Family physician in Chesterfield, Missouri. Individual provider, active in the CMS NPPES registry since March 21, 2019.
## Identity
- **NPI:** 1306306865 (Entity type: Individual)
- **Enumerated:** March 21, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2018027826 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 15740 SOUTH OUTER ROAD, Chesterfield, MO 63017
- **Phone:** (636) 237-4200
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Mercy Aco Clinical Services Inc (NPI 1063965093, Chesterfield, MO); Mercy Clinic Springfield Communities (NPI 1063541704, Cuba, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** May 14, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1306306865) · Data from the CMS NPPES public registry.