Yuiho Walker Mrozinski, ARNP
Nurse Practitioner · Seattle, WA
Yuiho Walker Mrozinski, ARNP is a nurse practitioner with a practice address in Seattle, Washington, and NPI 1316554017, issued on Sep 26, 2020. Check the license (Washington AP61135709, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Yuiho Walker Mrozinski
- Credential
- ARNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- AP61135709 WA
RN60576636 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 Madison St Ste 500, Seattle, WA 98104
- Phone
- (206) 215-5900
- Enumerated
- Sep 26, 2020
- Record last updated
- Apr 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (206) 215-2250
- Medicaid ID
- 1316554017 WA
- Medicare enrollment
- Enrolled (PECOS I20210315002701); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 2,308 in Washington → Look up another NPI →
Also registered at 1221 Madison St Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Yuiho Walker Mrozinski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP61135709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average nurse practitioner in 2024
221 Medicare Part D claims for 79 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Anastrozole36 claims
- Letrozole27 claims
- Prochlorperazine Maleate26 claims
- Ondansetron Hcl22 claims
- Tamoxifen Citrate20 claims
- Lidocaine-Prilocaine13 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): 82.8 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $43.16
1 payment: education; the largest payer was AstraZeneca Pharmaceuticals LP. The 38,884 providers of this specialty with any payment received $791.64 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Swedish Health ServicesSeattle, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yuiho Walker Mrozinski among 2,308 nurse practitioner records in Washington
Yuiho Walker Mrozinski, ARNP is one of 2,308 nurse practitioner records with a practice address in Washington. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 68% of them.
- NPI issued2020 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2020 · median 2018 among the 1,301 with a school on file
- Record last updated2021 · 47% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
569 nurse practitioner records list a practice address in Seattle
They are 569 of the 41,956 NPPES records with a practice address in Seattle, and 2,308 nurse practitioner records in Washington.
All 2,308 in Washington → Every provider in Seattle → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
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- Paula Cox-North, ARNPSeattle, WA 981041699763573
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- Elizabeth Dunlap, ARNPSeattle, WA 981041417908187
- Jessica Durham, ARNPSeattle, WA 981041619919362
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Common questions
What is Yuiho Walker Mrozinski, ARNP's NPI number?
Yuiho Walker Mrozinski, ARNP's National Provider Identifier (NPI) is 1316554017, issued on Sep 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Yuiho Walker Mrozinski, ARNP located?
The NPPES record lists a practice address at 1221 Madison St Ste 500, Seattle, WA, 98104. Phone: (206) 215-5900. Providers update this record themselves, so call before visiting.
How can I verify Yuiho Walker Mrozinski, ARNP's license?
NPPES lists Washington license number AP61135709, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Yuiho Walker Mrozinski, ARNP prescribe under Medicare Part D?
In 2024, Yuiho Walker Mrozinski, ARNP had 221 Medicare Part D claims for 79 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is Yuiho Walker Mrozinski, ARNP's MIPS final score?
The 2023 MIPS final score is 82.8 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.