NPPES file of Aug 9, 2026

Marit S. Knutson, ARNP

Family Nurse Practitioner · Seattle, WA

Marit S. Knutson, ARNP is a family nurse practitioner with a practice address in Seattle, Washington, and NPI 1922654797, issued on Aug 16, 2019. Check the license (Washington AP60993270, 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
1922654797
Name
Marit S. Knutson
Credential
ARNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP60993270 WA
Self-reported in NPPES; status is on the state search
Practice location
4060 E Stevens Way NE, Seattle, WA 98195
Phone
(206) 597-5242
Enumerated
Aug 16, 2019
Record last updated
Oct 8, 2025
Medicare enrollment
Enrolled (PECOS I20190919001927); 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 4060 E Stevens Way NE

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

  1. Marguerite Brady, ARNPNurse Practitioner1609089895
  2. Brendan CassidyPhysical Therapist1871823351
  3. Nicole Castagno, M,D., M.S.Family Medicine Physician1285160267
  4. Hsuan Hsuan Dai, LMHCMental Health Counselor1841625449
  5. Betsy Fine, MDFamily Medicine Physician1407870413
  6. Kate Fredenberg, LICSW, CDPClinical Social Worker1497025084

Verify Marit S. Knutson 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 AP60993270
    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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17% fewer Medicare Part D claims than the average family nurse practitioner in 2024

1,077 Medicare Part D claims for 142 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 37 claims were for opioids.

  1. Marit Knutson1,077
  2. Specialty average1,305

Most prescribed

  1. Gabapentin69 claims
  2. Amlodipine Besylate54 claims
  3. Rosuvastatin Calcium47 claims
  4. Lisinopril46 claims
  5. Atorvastatin Calcium42 claims
  6. Hydrochlorothiazide40 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 2 group practices

  1. International Community Health ServicesSeattle, WA
  2. The Association OF University PhysiciansSeattle, WA

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

Marit S. Knutson among 3,781 family nurse practitioner records in Washington

Marit S. Knutson, 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 2019, is newer than 62% of them.

  • NPI issued2019 · 62% of these records are older, 33% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2019 · 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).

663 family nurse practitioner records list a practice address in Seattle

They are 663 of the 41,956 NPPES records with a practice address in Seattle, and 3,781 family nurse practitioner records in Washington.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Claudia Davis, ARNPSeattle, WA 981951376561621
  2. Kathleen Errico, ARNPSeattle, WA 981951588699102
  3. Rebecca Evans, ARNPSeattle, WA 981951316926108
  4. Lisa Goben, ARNPSeattle, WA 981951851325807
  5. Patricia Hardman, ARNPSeattle, WA 981951871511147
  6. Lynda Hillman, DNP, ARNPSeattle, WA 981951811979305
  7. Jean Kallhoff, ARNPSeattle, WA 981951780618736
  8. Anthony Mitchell, FNPSeattle, WA 981951679563977

Common questions

What is Marit S. Knutson, ARNP's NPI number?

Marit S. Knutson, ARNP's National Provider Identifier (NPI) is 1922654797, issued on Aug 16, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Marit S. Knutson, ARNP located?

The NPPES record lists a practice address at 4060 E Stevens Way NE, Seattle, WA, 98195. Phone: (206) 597-5242. Providers update this record themselves, so call before visiting.

How can I verify Marit S. Knutson, ARNP's license?

NPPES lists Washington license number AP60993270, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Marit S. Knutson, ARNP prescribe under Medicare Part D?

In 2024, Marit S. Knutson, ARNP had 1,077 Medicare Part D claims for 142 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.