Katie Lynn Ernst, APRN, DNP
Family Nurse Practitioner · Poulsbo, WA
Katie Lynn Ernst, APRN, DNP is a family nurse practitioner with a practice address in Poulsbo, Washington, and NPI 1851811327, issued on Jun 26, 2017. Check the license (Washington AP60905096, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katie Lynn Ernst
- Credential
- APRN, DNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- AP60905096 WA
Self-reported in NPPES; status is on the state search - Practice location
- 21800 Market PL NW Ste 103, Poulsbo, WA 98370
- Phone
- (360) 291-5700
- Enumerated
- Jun 26, 2017
- Record last updated
- Oct 17, 2024
- Fax
- (360) 637-0863
- Medicare enrollment
- Enrolled (PECOS I20181126000338); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,781 in Washington → Look up another NPI →
Also registered at 21800 Market PL NW Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jeffrey Gertner, MDDermatology Physician1912980624
- Andrea Smith, M.D.Dermatology Physician1801064969
- Alison Stinnett, PAPhysician Assistant1427066323
Verify Katie Lynn Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP60905096Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average family nurse practitioner in 2024
576 Medicare Part D claims for 275 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Clobetasol Propionate101 claims
- Ketoconazole67 claims
- Metronidazole62 claims
- Fluorouracil49 claims
- Triamcinolone Acetonide43 claims
- Doxycycline Hyclate36 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.
The MIPS final score for 2023 (Medicare payment program): 83.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Smithcare General Dermatology, Mohs Surgery And Aesthetics PLLCPoulsbo, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katie Lynn Ernst among 3,781 family nurse practitioner records in Washington
Katie Lynn Ernst, APRN, DNP is one of 3,781 family nurse practitioner records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 52% of them.
- NPI issued2017 · 52% of these records are older, 43% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2017 · median 2018 among the 2,116 with a school on file
- Record last updated2024 · 46% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
10 family nurse practitioner records list a practice address in Poulsbo
They are 10 of the 622 NPPES records with a practice address in Poulsbo, and 3,781 family nurse practitioner records in Washington.
All 3,781 in Washington → Every provider in Poulsbo → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Holly Bullion, FNP-CPoulsbo, WA 983701720497126
- Holly HawksPoulsbo, WA 983701144777673
- Emily Magwire, FNPPoulsbo, WA 983701255952701
- Judith McPhersonPoulsbo, WA 983701811657042
- Jami Mock, ARNPPoulsbo, WA 983701144896390
- Doreen Morris, ARNPPoulsbo, WA 983701457369563
- Harry Ross, ARNPPoulsbo, WA 983701235299181
- Svetlana Swan, ARNPPoulsbo, WA 983701851782247
Common questions
What is Katie Lynn Ernst, APRN, DNP's NPI number?
Katie Lynn Ernst, APRN, DNP's National Provider Identifier (NPI) is 1851811327, issued on Jun 26, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Katie Lynn Ernst, APRN, DNP located?
The NPPES record lists a practice address at 21800 Market PL NW Ste 103, Poulsbo, WA, 98370. Phone: (360) 291-5700. Providers update this record themselves, so call before visiting.
How can I verify Katie Lynn Ernst, APRN, DNP's license?
NPPES lists Washington license number AP60905096, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Katie Lynn Ernst, APRN, DNP prescribe under Medicare Part D?
In 2024, Katie Lynn Ernst, APRN, DNP had 576 Medicare Part D claims for 275 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Katie Lynn Ernst, APRN, DNP's MIPS final score?
The 2023 MIPS final score is 83.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.