NPPES file of Aug 9, 2026

Leikin Louise Louderback, ARNP

Family Nurse Practitioner · Walla Walla, WA

Leikin Louise Louderback, ARNP is a family nurse practitioner with a practice address in Walla Walla, Washington, and NPI 1063293561, issued on Oct 10, 2023. Check the license (Washington AP61471420, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1063293561
Name
Leikin Louise Louderback
Credential
ARNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP61471420 WA
Self-reported in NPPES; status is on the state search
Practice location
380 Chase Ave, Walla Walla, WA 99362
Phone
(509) 897-3333
Enumerated
Oct 10, 2023
Record last updated
Mar 20, 2025
Medicare enrollment
Enrolled (PECOS I20240105003925); 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 380 Chase Ave

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

  1. Dalari AllingtonPharmacist1134467582
  2. Bruce Barga, MDInternal Medicine Physician1457375206
  3. James Barrow, DPTGeriatric Physical Therapist1194575621
  4. Angela Bly, RNHome Health Registered Nurse1801624325
  5. Abigail BradleyPhysician Assistant1013785955
  6. Sarah CochellPhysical Therapy Assistant1528809282

Verify Leikin Louise Louderback 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 AP61471420
    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

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94% fewer Medicare Part D claims than the average family nurse practitioner in 2024

82 Medicare Part D claims for 33 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 15 claims were for opioids.

  1. Leikin Louderback82
  2. Specialty average1,305

Most prescribed

  1. Pantoprazole Sodium17 claims
  2. Ursodiol11 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 one group practice

  1. Providence Health And Services - WashingtonWalla Walla, WA

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

Leikin Louise Louderback among 3,781 family nurse practitioner records in Washington

Leikin Louise Louderback, ARNP 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 2023, is newer than 83% of them.

  • NPI issued2023 · 83% of these records are older, 10% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2023 · median 2018 among the 2,116 with a school on file
  • Record last updated2025 · 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).

30 family nurse practitioner records list a practice address in Walla Walla

They are 30 of the 1,276 NPPES records with a practice address in Walla Walla, and 3,781 family nurse practitioner records in Washington.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Eileen Bow, ARNP-FPWalla Walla, WA 993621962487132
  2. Jennifer Christenson, ARNPWalla Walla, WA 993621457336158
  3. Ellen Collette, A.R.N.P.Walla Walla, WA 993621760685424
  4. Elizabeth Eaton-Gamsby, R.N., F.N.P.Walla Walla, WA 993621720114366
  5. Susan Friesen, FNP, ARNPWalla Walla, WA 993621225208333
  6. Michael Frizelle, FNPWalla Walla, WA 993621699931493
  7. Paul Holce, ARNP-CWalla Walla, WA 993621225049992
  8. Laura Hollister-Meadows, FNP-BCWalla Walla, WA 993621477534972

Common questions

What is Leikin Louise Louderback, ARNP's NPI number?

Leikin Louise Louderback, ARNP's National Provider Identifier (NPI) is 1063293561, issued on Oct 10, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Leikin Louise Louderback, ARNP located?

The NPPES record lists a practice address at 380 Chase Ave, Walla Walla, WA, 99362. Phone: (509) 897-3333. Providers update this record themselves, so call before visiting.

How can I verify Leikin Louise Louderback, ARNP's license?

NPPES lists Washington license number AP61471420, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Leikin Louise Louderback, ARNP prescribe under Medicare Part D?

In 2024, Leikin Louise Louderback, ARNP had 82 Medicare Part D claims for 33 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.