ABIGAIL RUBY ANDERSEN FNP-C
NPI 1639046311
Nurse Practitioner - Primary Care in Oakes, ND
About Abigail Ruby Andersen Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ABIGAIL RUBY ANDERSEN FNP-C (NPI 1639046311) is an individual primary care provider in Oakes, North Dakota, licensed in North Dakota (203629) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS, is affiliated with Chi Oakes Hospital, 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
Abigail Ruby Andersen 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 Abigail Andersen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oakes, ND 58474
- Reassigned Medicare billing, North Dakota enrollment
- Also billed through NPI 1598848517 (North Dakota)
- 40 clinicians in this Medicare group
Lisbon, ND 58054
- Reassigned Medicare billing, North Dakota enrollment
- Also billed through NPI 1184051971 (North Dakota)
- 39 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.
Chi Oakes Hospital
Critical Access Hospitals · Oakes, NDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 58474 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 9
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 Abigail Andersen's NPI number?
The NPI number for Abigail Andersen is 1639046311. It was assigned to this individual provider in the NPPES registry on October 20, 2025.
Where is Abigail Andersen located?
Abigail Andersen practices at 1200 N 7th St, Oakes, ND 58474. The listed phone number is (701) 742-3291.
What is Abigail Andersen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Abigail Andersen enrolled in Medicare?
Yes. Abigail Andersen 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 Abigail Andersen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abigail Andersen reassigns Medicare benefits to 2 organizations: Oakes Community Hospital (Oakes, ND) and Lisbon Area Health Services (Lisbon, ND). 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 Abigail Andersen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Abigail Andersen accept?
Health plans from Blue Cross Blue Shield of North Dakota and Sanford Health Plan list Abigail Andersen 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 Abigail Andersen affiliated with any hospitals?
According to CMS data, Abigail Andersen is affiliated with Chi Oakes Hospital.
When was this NPI record last updated?
The NPPES record for Abigail Andersen was last updated on October 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Abigail Ruby Andersen, FNP-C · NPI 1639046311
Primary Care physician in Oakes, North Dakota. Individual provider, active in the CMS NPPES registry since October 20, 2025.
## Identity
- **NPI:** 1639046311 (Entity type: Individual)
- **Enumerated:** October 20, 2025
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** 203629 (North Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 1200 N 7TH ST, Oakes, ND 58474-2502
- **Phone:** (701) 742-3291
## 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): Oakes Community Hospital (NPI 1477724433, Oakes, ND); Lisbon Area Health Services (NPI 1609872431, Lisbon, ND) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** October 20, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1639046311) · Data from the CMS NPPES public registry.