Katharine Lou Nadia Holmstrom, FNP-C
Nurse Practitioner · Zillah, WA
Katharine Lou Nadia Holmstrom, FNP-C is a nurse practitioner with a practice address in Zillah, Washington, and NPI 1700762242, issued on Aug 12, 2025. Check the license (Washington AP70024639, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katharine Lou Nadia Holmstrom
- Credential
- FNP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- AP70024639 WA
Self-reported in NPPES; status is on the state search - Practice location
- 1701 N Granger RD, Zillah, WA 98953
- Phone
- (425) 681-2580
- Enumerated
- Aug 12, 2025
- Record last updated
- Nov 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20250923002850); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 2,308 in Washington → Look up another NPI →
Verify Katharine Lou Nadia Holmstrom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP70024639Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Yakima Valley Farm Workers ClinicYakima, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katharine Lou Nadia Holmstrom among 2,308 nurse practitioner records in Washington
Katharine Lou Nadia Holmstrom, FNP-C 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 2025, is newer than 95% of them.
- NPI issued2025 · 95% of these records are older, 1% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2025 · median 2018 among the 1,301 with a school on file
- Record last updated2025 · 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).
1 nurse practitioner record lists a practice address in Zillah
They are 1 of the 38 NPPES records with a practice address in Zillah, and 2,308 nurse practitioner records in Washington.
All 2,308 in Washington → Every provider in Zillah → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Graceann FreemanWapato, WA 989511124227244
- Bonnie Oxford, FNPWapato, WA 989511366000515
- Annie ChisholmToppenish, WA 989481821477365
- Pamela DriverToppenish, WA 989481902429053
- Sarah GarrisonToppenish, WA 989481528391414
- Chigozie KaluToppenish, WA 989481497524888
- Mary Morphet-BrownToppenish, WA 989481194891382
- Susan Pierce-RichardsToppenish, WA 989481811050750
Common questions
What is Katharine Lou Nadia Holmstrom, FNP-C's NPI number?
Katharine Lou Nadia Holmstrom, FNP-C's National Provider Identifier (NPI) is 1700762242, issued on Aug 12, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Katharine Lou Nadia Holmstrom, FNP-C located?
The NPPES record lists a practice address at 1701 N Granger RD, Zillah, WA, 98953. Phone: (425) 681-2580. Providers update this record themselves, so call before visiting.
How can I verify Katharine Lou Nadia Holmstrom, FNP-C's license?
NPPES lists Washington license number AP70024639, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity 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.