Marissa Armstrong, DNP, FNP-C
Nurse Practitioner · Post Falls, ID
Marissa Armstrong, DNP, FNP-C is a nurse practitioner with a practice address in Post Falls, Idaho, and NPI 1609437508, issued on Jun 22, 2019. Check the license (Idaho 62266, as entered in NPPES) with the Idaho board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Armstrong
- Credential
- DNP, FNP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 62266 ID
43344 ID
AP60978160 WA
RN60978158 WA
Self-reported in NPPES; status is on the state search - Practice location
- 750 N Syringa St Ste 100, Post Falls, ID 83854
- Phone
- (208) 262-2600
- Enumerated
- Jun 22, 2019
- Record last updated
- Feb 2, 2026
- Fax
- (208) 262-2700
- Medicare enrollment
- Enrolled (PECOS I20200113000587); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 593 in Idaho → Look up another NPI →
Also registered at 750 N Syringa St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Marissa Armstrong in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Idaho board licenses this profession
Search for license 62266Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average nurse practitioner in 2024
96 Medicare Part D claims for 67 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Fluticasone Propionate17 claims
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.
Bills Medicare through 2 group practices
- Community Health Association OF SpokaneSpokane Valley, WA
- North Idaho Day Surgery LLCPost Falls, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Armstrong among 593 nurse practitioner records in Idaho
Marissa Armstrong, DNP, FNP-C is one of 593 nurse practitioner records with a practice address in Idaho. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 58% of them.
- NPI issued2019 · 58% of these records are older, 35% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2019 · median 2018 among the 382 with a school on file
- Record last updated2026 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Idaho practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 nurse practitioner records list a practice address in Post Falls
They are 20 of the 655 NPPES records with a practice address in Post Falls, and 593 nurse practitioner records in Idaho.
All 593 in Idaho → Every provider in Post Falls → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Bucklee Eller, ARNPPost Falls, ID 838541740606946
- Laura Ensley-Eddy, M.S.N., F.N.P.-CPost Falls, ID 838541740453539
- Colleen Graey, FNPPost Falls, ID 838541407945041
- Darleen Handal, ACNPPost Falls, ID 838541841604097
- Stephanie Hart, ARNPPost Falls, ID 838541659692200
- Gary Hurst, ARNPPost Falls, ID 838541114951647
- Julia Koep, ARNPPost Falls, ID 838541871522037
- Mary Liter, ARNPPost Falls, ID 838541558303628
Common questions
What is Marissa Armstrong, DNP, FNP-C's NPI number?
Marissa Armstrong, DNP, FNP-C's National Provider Identifier (NPI) is 1609437508, issued on Jun 22, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Armstrong, DNP, FNP-C located?
The NPPES record lists a practice address at 750 N Syringa St Ste 100, Post Falls, ID, 83854. Phone: (208) 262-2600. Providers update this record themselves, so call before visiting.
How can I verify Marissa Armstrong, DNP, FNP-C's license?
NPPES lists Idaho license number 62266, as entered by the provider. Search the Idaho board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Armstrong, DNP, FNP-C prescribe under Medicare Part D?
In 2024, Marissa Armstrong, DNP, FNP-C had 96 Medicare Part D claims for 67 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.