MARGARET PRIOR
NPI 1336553189
Obstetrics & Gynecology in Fort Defiance, AZ
About Margaret Prior NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET PRIOR (NPI 1336553189) is an individual obstetrics & gynecology provider in Fort Defiance, Arizona, licensed in Michigan (4301105456) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS and is a graduate of Wayne State University School Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses
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 Prior 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 Margaret Prior reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fort Defiance, AZ 86504
- Reassigned Medicare billing, Texas enrollment
- 518 clinicians in this Medicare group
Toadlena, NM 87324
- Reassigned Medicare billing, Texas enrollment
- 572 clinicians in this Medicare group
Cortez, CO 81321
- Reassigned Medicare billing, Colorado enrollment
- Also billed through NPI 1649241571 (Colorado)
- 97 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 86504 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
FORT DEFIANCE, AZ 86504
FORT DEFIANCE, AZ 86504
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 Prior's NPI number?
The NPI number for Margaret Prior is 1336553189. It was assigned to this individual provider in the NPPES registry on June 19, 2014.
Where is Margaret Prior located?
Margaret Prior practices at Corner Of Route N12 And N7, Fort Defiance, AZ 86504. The listed phone number is (928) 729-8000.
What is Margaret Prior's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Margaret Prior enrolled in Medicare?
Yes. Margaret Prior 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 Prior's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Prior reassigns Medicare benefits to 3 organizations: The Fort Defiance Indian Hospital Board, Incorporation (Fort Defiance, AZ), Dhhs, Phs, Naihs, Shiprock Hospital (Toadlena, NM) and Southwest Health System, Inc. (Cortez, CO). 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 Prior's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Prior was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Margaret Prior · NPI 1336553189
Obstetrics & Gynecology physician in Fort Defiance, Arizona. Individual provider, active in the CMS NPPES registry since June 19, 2014.
## Identity
- **NPI:** 1336553189 (Entity type: Individual)
- **Enumerated:** June 19, 2014
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 4301105456 (Michigan)
- **Sole proprietor:** Yes
## Practice location
- **Address:** CORNER OF ROUTE N12 AND N7, Fort Defiance, AZ 86504-0649
- **Phone:** (928) 729-8000
## 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): The Fort Defiance Indian Hospital Board, Incorporation (NPI 1477876639, Fort Defiance, AZ); Dhhs, Phs, Naihs, Shiprock Hospital (NPI 1952526337, Toadlena, NM); Southwest Health System, Inc. (NPI 1316602972, Cortez, CO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2014
## Record status
- **NPPES last updated:** November 3, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1336553189) · Data from the CMS NPPES public registry.