MARY HANNAH PIERCE FNP- C
NPI 1518565357
Nurse Practitioner - Family in Hayti, MO
About Mary Hannah Pierce Fnp- C NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY HANNAH PIERCE FNP- C (NPI 1518565357) is an individual family provider in Hayti, Missouri, licensed in Missouri (F09200160) and active in the NPI registry since October 2020. She is enrolled in Medicare PECOS, is affiliated with Poplar Bluff Regional Medical Center, and is a graduate of Other (2020).
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
Mary Hannah Pierce 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 Mary Pierce reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hayti, MO 63851
- Reassigned Medicare billing, Missouri enrollment
- 116 clinicians in this Medicare group
Hayti, MO 63851
- Reassigned Medicare billing, Missouri enrollment
- 10 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Poplar Bluff Regional Medical Center
Acute Care Hospitals · Poplar Bluff, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63851 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 14
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 Mary Pierce's NPI number?
The NPI number for Mary Pierce is 1518565357. It was assigned to this individual provider in the NPPES registry on October 14, 2020.
Where is Mary Pierce located?
Mary Pierce practices at 907 E Reed St, Hayti, MO 63851. The listed phone number is (573) 359-3661.
What is Mary Pierce's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Pierce enrolled in Medicare?
Yes. Mary Pierce 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 Mary Pierce's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Pierce reassigns Medicare benefits to 2 organizations: Mcpherson Medical & Diagnostic LLC (Hayti, MO) and Pemiscot County Memorial Hospital (Hayti, 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 Mary Pierce's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Pierce 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 4 other insurers list Mary Pierce 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 Mary Pierce affiliated with any hospitals?
According to CMS data, Mary Pierce is affiliated with Poplar Bluff Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Pierce was last updated on April 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mary Hannah Pierce, FNP- C · NPI 1518565357
Family physician in Hayti, Missouri. Individual provider, active in the CMS NPPES registry since October 14, 2020.
## Identity
- **NPI:** 1518565357 (Entity type: Individual)
- **Enumerated:** October 14, 2020
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** F09200160 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 907 E REED ST, Hayti, MO 63851-1242
- **Phone:** (573) 359-3661
## 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): Mcpherson Medical & Diagnostic LLC (NPI 1821827452, Hayti, MO); Pemiscot County Memorial Hospital (NPI 1437251881, Hayti, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** April 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1518565357) · Data from the CMS NPPES public registry.