RETTE MARIE RILEY OLSEN DNP, APRN, FNP-C
NPI 1013623453
Nurse Practitioner - Family in Great Falls, MT

Active since January 30, 2023PECOS EnrolledAccepts Medicare Assignment
1401 25TH ST S, GREAT FALLS, MT 59405(406) 731-8888(406) 731-8318 Get Directions Write a Review

NPPES record last updated: January 7, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Jan 7, 2026, Sep 4, 2024, Aug 12, 2024 and 1 more (4 updates tracked since 2023).

About Rette Marie Riley Olsen Dnp, Aprn, Fnp-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RETTE MARIE RILEY OLSEN DNP, APRN, FNP-C (NPI 1013623453) is an individual family provider in Great Falls, Montana, licensed in Montana (241721) and active in the NPI registry since January 2023. She is enrolled in Medicare PECOS, is affiliated with Benefis Hospitals Inc, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1013623453
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameRETTE MARIE RILEY OLSENCredential: DNP, APRN, FNP-C
Location Address1401 25TH ST SGreat Falls, MT 59405-5183
Mailing AddressPo Box 6010Great Falls, MT 59406-6010
Fax(406) 731-8318
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateJanuary 30, 2023
Last NPPES UpdateJanuary 7, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 7, 2026
NPI 1013623453 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License Licensed in MT · 241721
Also ListedNurse Practitioner · Primary CareTaxonomy 363LP2300X · License NUR-APRN-LIC-241721 (MT)
1401 25TH ST S, Great Falls, MT 59405

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Rette Marie Riley Olsen Dnp, Aprn, 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.

PECOS PAC ID9739620279
PECOS Enrollment IDI20240924001582
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Benefis Hospitals Inc

Acute Care Hospitals · Great Falls, MT
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270012
Location1101 26th St SGreat Falls, MT 59405 · Cascade County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59405 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$87.97 typical visit price
range $56.81 – $172.26
Typical copayment $21.99 (range $14.20 – $43.06)
Most-billed visit code 99203
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Specialist
1401 25TH ST S
GREAT FALLS, MT 59405
Clinic/Center (Ambulatory Surgical)
1401 25TH ST S
GREAT FALLS, MT 59405
Physical Therapy Assistant
1401 25TH ST S
GREAT FALLS, MT 59405
Psychiatry & Neurology (Neurology)
1401 25TH ST S
GREAT FALLS, MT 59405
Specialist
1401 25TH ST S
GREAT FALLS, MT 59405
Pharmacist
1401 25TH ST S
GREAT FALLS, MT 59405
Family Medicine
1401 25TH ST S
GREAT FALLS, MT 59405
Nurse Practitioner (Family)
1401 25TH ST S
GREAT FALLS, MT 59405

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 Rette Olsen's NPI number?

The NPI number for Rette Olsen is 1013623453. It was assigned to this individual provider in the NPPES registry on January 30, 2023.

Where is Rette Olsen located?

Rette Olsen practices at 1401 25th St S, Great Falls, MT 59405. The listed phone number is (406) 731-8888.

What is Rette Olsen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Rette Olsen enrolled in Medicare?

Yes. Rette Olsen 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.

What insurance does Rette Olsen accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and Providence Health Plan list Rette Olsen 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 Rette Olsen affiliated with any hospitals?

According to CMS data, Rette Olsen is affiliated with Benefis Hospitals Inc.

When was this NPI record last updated?

The NPPES record for Rette Olsen was last updated on January 7, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.