Rette Marie Riley Olsen, DNP, APRN, FNP-C
Family Nurse Practitioner · Great Falls, MT
Rette Marie Riley Olsen, DNP, APRN, FNP-C is a family nurse practitioner with a practice address in Great Falls, Montana, and NPI 1013623453, issued on Jan 30, 2023. Check the license (Montana 241721, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rette Marie Riley Olsen
- Credential
- DNP, APRN, FNP-C
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License numbers
- 241721 MT
NUR-APRN-LIC-241721 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1401 25TH St S, Great Falls, MT 59405
- Phone
- (406) 731-8888
- Enumerated
- Jan 30, 2023
- Record last updated
- Jan 7, 2026
- Fax
- (406) 731-8318
- Medicare enrollment
- Enrolled (PECOS I20240924001582); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 815 in Montana → Look up another NPI →
Also registered at 1401 25TH St S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Addison, MDGeriatric Medicine (Internal Medicine) Physician1871594754
- Sheela Ahmed, MDPulmonary Disease Physician1083736227
- Jill Aitken, AUDAudiologist1730386020
- Jamie Aleba, PAMedical Physician Assistant1184929572
- Thomas Attaway, MDGastroenterology Physician1922012442
- Lily AvgustovskiyNurse Practitioner1093122335
Verify Rette Marie Riley Olsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 241721Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family nurse practitioner in 2024
39 Medicare Part D claims for 23 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
One hospital affiliation
- Benefis Hospitals IncGreat Falls, MT · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Rette Marie Riley Olsen among 815 family nurse practitioner records in Montana
Rette Marie Riley Olsen, DNP, APRN, FNP-C is one of 815 family nurse practitioner records with a practice address in Montana. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 84% of them.
- NPI issued2023 · 84% of these records are older, 11% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2024 · median 2018 among the 505 with a school on file
- Record last updated2026 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
87 family nurse practitioner records list a practice address in Great Falls
They are 87 of the 1,798 NPPES records with a practice address in Great Falls, and 815 family nurse practitioner records in Montana.
All 815 in Montana → Every provider in Great Falls → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Robin Boland, FNPGreat Falls, MT 594051528398492
- Anne Eby, APRN, FNPGreat Falls, MT 594051396077632
- Edith Ellsworth, APRN, BCGreat Falls, MT 594051972786986
- Gretchen Fowell, FNPGreat Falls, MT 594051649209867
- Heidi Fritz, FNPGreat Falls, MT 594051770538407
- Sonya Gilson, APNPGreat Falls, MT 594051295981801
- Jason Gleason, FNPGreat Falls, MT 594051447360987
- Mary Gray, FNPGreat Falls, MT 594051184625055
Common questions
What is Rette Marie Riley Olsen, DNP, APRN, FNP-C's NPI number?
Rette Marie Riley Olsen, DNP, APRN, FNP-C's National Provider Identifier (NPI) is 1013623453, issued on Jan 30, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Rette Marie Riley Olsen, DNP, APRN, FNP-C located?
The NPPES record lists a practice address at 1401 25TH St S, Great Falls, MT, 59405. Phone: (406) 731-8888. Providers update this record themselves, so call before visiting.
How can I verify Rette Marie Riley Olsen, DNP, APRN, FNP-C's license?
NPPES lists Montana license number 241721, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Rette Marie Riley Olsen, DNP, APRN, FNP-C prescribe under Medicare Part D?
In 2024, Rette Marie Riley Olsen, DNP, APRN, FNP-C had 39 Medicare Part D claims for 23 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.