NPPES file of Aug 9, 2026

Kristina Katarina Johnstone, ARNP

Acute Care Nurse Practitioner · Coupeville, WA

Kristina Katarina Johnstone, ARNP is an acute care nurse practitioner with a practice address in Coupeville, Washington, and NPI 1578282992, issued on Aug 29, 2022. Check the license (Washington AP61341751, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1578282992
Name
Kristina Katarina Johnstone
Credential
ARNP
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
AP61341751 WA
Self-reported in NPPES; status is on the state search
Practice location
101 N Main St, Coupeville, WA 98239
Phone
(360) 678-5151
Enumerated
Aug 29, 2022
Record last updated
Aug 29, 2022
Medicare enrollment
Enrolled (PECOS I20221117000865); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 101 N Main St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Christina Amendolare, AGPCNPGerontology Nurse Practitioner1952963829
  2. Lynbert Balagot, RNRegistered Nurse1235862129
  3. Samir Bishai, M.D.Emergency Medicine Physician1013944875
  4. Mark Borden, M.D.Emergency Medicine Physician1912943622
  5. Lena Bransom, APRNFamily Nurse Practitioner1508623315
  6. Ashley Browning, PHYSICIAN ASSISTANTPhysician Assistant1710165428

Verify Kristina Katarina Johnstone in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this profession
    Search for license AP61341751
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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62% more Medicare Part D claims than the average acute care nurse practitioner in 2024

963 Medicare Part D claims for 121 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D.

  1. Kristina Johnstone963
  2. Specialty average594

Most prescribed

  1. Atorvastatin Calcium82 claims
  2. Losartan Potassium79 claims
  3. Lisinopril76 claims
  4. Hydrochlorothiazide51 claims
  5. Amlodipine Besylate37 claims
  6. Metoprolol Succinate36 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 practice group's MIPS final score for 2023 (Medicare payment program): 71.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score76.6
  2. Costout of 100 · 30%36.0
  3. Promoting interoperabilityout of 100 · 25%92.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Whidbey Island Public Hospital DistrictFreeland, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kristina Katarina Johnstone among 283 acute care nurse practitioner records in Washington

Kristina Katarina Johnstone, ARNP is one of 283 acute care nurse practitioner records with a practice address in Washington. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 72% of them.

  • NPI issued2022 · 72% of these records are older, 18% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated2022 · median 2020 among the 207 with a school on file
  • Record last updated2022 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2100X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

2 acute care nurse practitioner records list a practice address in Coupeville

They are 2 of the 197 NPPES records with a practice address in Coupeville, and 283 acute care nurse practitioner records in Washington.

The 8 acute care nurse practitioner records with the nearest ZIP codes

  1. Tyler Willis, DNP, NPCoupeville, WA 982391689340515
  2. Christina Wolf, AGACNPBellingham, WA 982291639676992
  3. Cathy Phan, ARNPBellingham, WA 982261851625701
  4. Jasveen Dhaliwal, NPBellingham, WA 982251932810959
  5. Macon Henry, APRNBellingham, WA 982251467675306
  6. Katie Pernick, MSNBellingham, WA 982251487136859
  7. Kelly Plyler, ARNP, AGACNPBellingham, WA 982251750825022
  8. Shaun Saunders, AGACNP-BCBellingham, WA 982251780325829

Common questions

What is Kristina Katarina Johnstone, ARNP's NPI number?

Kristina Katarina Johnstone, ARNP's National Provider Identifier (NPI) is 1578282992, issued on Aug 29, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Kristina Katarina Johnstone, ARNP located?

The NPPES record lists a practice address at 101 N Main St, Coupeville, WA, 98239. Phone: (360) 678-5151. Providers update this record themselves, so call before visiting.

How can I verify Kristina Katarina Johnstone, ARNP's license?

NPPES lists Washington license number AP61341751, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Kristina Katarina Johnstone, ARNP prescribe under Medicare Part D?

In 2024, Kristina Katarina Johnstone, ARNP had 963 Medicare Part D claims for 121 beneficiaries; the average among acute care nurse practitioner prescribers was 594. Part D covers Medicare prescriptions only.

What is Kristina Katarina Johnstone, ARNP's MIPS final score?

The 2023 MIPS final score is 71.8 of 100, reported for the practice group. 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.