NPPES file of Aug 9, 2026

Karina Joana Timpson, CRNA

Certified Registered Nurse Anesthetist · Seattle, WA

Karina Joana Timpson, CRNA is a certified registered nurse anesthetist with a practice address in Seattle, Washington, and NPI 1427911684, issued on Dec 4, 2025. Check the license (Washington ARNP.AP.70095110-CRN, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427911684
Name
Karina Joana Timpson
Credential
CRNA
Primary taxonomy
Certified Registered Nurse Anesthetist 367500000X
License numbers
ARNP.AP.70095110-CRN WA
RN.RN.70086072 WA
Self-reported in NPPES; status is on the state search
Practice location
1959 NE Pacific St, Seattle, WA 98195
Phone
(206) 520-5000
Enumerated
Dec 4, 2025
Record last updated
Apr 20, 2026
Medicare enrollment
Enrolled (PECOS I20260401003732); 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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8 nearest certified registered nurse anesthetist records → All 1,181 in Washington → Look up another NPI →

Also registered at 1959 NE Pacific St

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

  1. Benjamin AaronsonPsychologist1497108880
  2. Laith Abandeh, MDPediatric Radiology Physician1609404243
  3. Rebecca AbayInternal Medicine Physician1528565520
  4. Gifti Abbo, MDStudent in an Organized Health Care Education/Training Program1316688989
  5. Nandini AbburiNeurology Physician1730618349
  6. Mohamed AbdelmotlebDiagnostic Radiology Physician1134892656

Verify Karina Joana Timpson 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 ARNP.AP.70095110-CRN    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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Bills Medicare through one group practice

  1. 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).

Karina Joana Timpson among 1,181 certified registered nurse anesthetist records in Washington

Karina Joana Timpson, CRNA is one of 1,181 certified registered nurse anesthetist 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 97% of them.

  • NPI issued2025 · 97% of these records are older, 1% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2025 · median 2014 among the 816 with a school on file
  • Record last updated2026 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Certified Registered Nurse Anesthetist providers in Washington

There are 1,181 certified registered nurse anesthetist records in Washington.

All 1,181 in Washington → Every provider in Seattle → Certified Registered Nurse Anesthetist nationwide →

The 8 certified registered nurse anesthetist records with the nearest ZIP codes

  1. Connie Alley, CRNASeattle, WA 981951225090400
  2. Ledjie Ballard, CRNASeattle, WA 981951124080387
  3. Melissa Bennett, CRNASeattle, WA 981951770545345
  4. Katherine Buchanan, CRNASeattle, WA 981951821050063
  5. Brian Buchanan, CRNASeattle, WA 981951134181852
  6. Deborah Castellan, CRNASeattle, WA 981951588626162
  7. Allison Flexner, CRNASeattle, WA 981951508833716
  8. Allen Koopman, CRNASeattle, WA 981951104889757

Common questions

What is Karina Joana Timpson, CRNA's NPI number?

Karina Joana Timpson, CRNA's National Provider Identifier (NPI) is 1427911684, issued on Dec 4, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Karina Joana Timpson, CRNA located?

The NPPES record lists a practice address at 1959 NE Pacific St, Seattle, WA, 98195. Phone: (206) 520-5000. Providers update this record themselves, so call before visiting.

How can I verify Karina Joana Timpson, CRNA's license?

NPPES lists Washington license number ARNP.AP.70095110-CRN, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.