DR. MAUDE E NIELSEN MD
NPI 1679572283
Family Medicine in Fort Defiance, AZ
About Dr. Maude E Nielsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MAUDE E NIELSEN MD (NPI 1679572283) is an individual family medicine provider in Fort Defiance, Arizona, licensed in New Mexico (2000-250) and active in the NPI registry since July 2005. She is enrolled in Medicare PECOS, is affiliated with San Juan Regional Medical Center Inc, and maintains a secondary practice location in Farmington.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Dr. Maude E Nielsen 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 Maude Nielsen reassigns Medicare billing to 5 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
Farmington, NM 87401
- Reassigned Medicare billing, New Mexico enrollment
- 368 clinicians in this Medicare group
Albuquerque, NM 87106
- Reassigned Medicare billing, New Mexico enrollment
- 2,331 clinicians in this Medicare group
Albuquerque, NM 87106
- Reassigned Medicare billing, New Mexico enrollment
- 2,105 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, New Mexico enrollment
- 251 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 3
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.
San Juan Regional Medical Center Inc
Acute Care Hospitals · Farmington, NMPhysician 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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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 Maude Nielsen's NPI number?
The NPI number for Maude Nielsen is 1679572283. It was assigned to this individual provider in the NPPES registry on July 15, 2005.
Where is Maude Nielsen located?
Maude Nielsen practices at Corner Of Route N12 And N7, Fort Defiance, AZ 86504. The listed phone number is (928) 729-8000.
What is Maude Nielsen's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Maude Nielsen enrolled in Medicare?
Yes. Maude Nielsen 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 Maude Nielsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maude Nielsen reassigns Medicare benefits to 5 organizations: The Fort Defiance Indian Hospital Board, Incorporation (Fort Defiance, AZ), San Juan Regional Medical Center Inc (Farmington, NM), Presbyterian Healthcare Services (Albuquerque, NM), Unm Medical Group Inc (Albuquerque, NM) and Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX). 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 Maude Nielsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Maude Nielsen affiliated with any hospitals?
According to CMS data, Maude Nielsen is affiliated with San Juan Regional Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Maude Nielsen was last updated on January 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Dr. Maude E Nielsen, MD · NPI 1679572283
Family Medicine physician in Fort Defiance, Arizona. Individual provider, active in the CMS NPPES registry since July 15, 2005.
## Identity
- **NPI:** 1679572283 (Entity type: Individual)
- **Enumerated:** July 15, 2005
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 2000-250 (New Mexico)
- **Sole proprietor:** No
## Practice location
- **Address:** CORNER OF ROUTE N12 AND N7, Fort Defiance, AZ 86504
- **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:** 5 organizations under Medicare reassignment (form CMS-855R): The Fort Defiance Indian Hospital Board, Incorporation (NPI 1477876639, Fort Defiance, AZ); San Juan Regional Medical Center Inc (NPI 1124262415, Farmington, NM); Presbyterian Healthcare Services (NPI 1215913470, Albuquerque, NM); Unm Medical Group Inc (NPI 1831218627, Albuquerque, NM); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** January 13, 2026
- **Other identifiers:** Medicaid N3885 (NM)
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Source: [NPI Profile](https://npiprofile.com/npi/1679572283) · Data from the CMS NPPES public registry.