NPPES file of Aug 9, 2026

Crystal Charlotte Kostelyk, ARNP

Family Nurse Practitioner · Kirkland, WA

Crystal Charlotte Kostelyk, ARNP is a family nurse practitioner with a practice address in Kirkland, Washington, and NPI 1376916510, issued on Nov 10, 2015. Check the license (Washington AP61455830, 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
1376916510
Name
Crystal Charlotte Kostelyk
Credential
ARNP
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
AP61455830 WA
Self-reported in NPPES; status is on the state search
Practice location
11417 124TH Ave NE Ste 100, Kirkland, WA 98033
Phone
(800) 640-3451
Enumerated
Nov 10, 2015
Record last updated
Mar 11, 2025
Medicare enrollment
Enrolled (PECOS I20230830000483); 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 11417 124TH Ave NE Ste 100

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

  1. Crystal Birdsong, NPNurse Practitioner1457540189
  2. Caitlin Jarvis, FNP-BC, ARNPFamily Nurse Practitioner1477956951
  3. Creseta Simmons, AGNP-CGerontology Nurse Practitioner1780242131
  4. Juanita Williams, APRNNurse Practitioner1770071573

Verify Crystal Charlotte Kostelyk 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 AP61455830
    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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72% fewer Medicare Part D claims than the average family nurse practitioner in 2024

360 Medicare Part D claims for 122 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Crystal Kostelyk360
  2. Specialty average1,305

Most prescribed

  1. Amlodipine Besylate22 claims
  2. Levothyroxine Sodium16 claims
  3. Lisinopril15 claims
  4. Gabapentin13 claims
  5. Losartan Potassium13 claims
  6. Atorvastatin Calcium11 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. Plaid Eagle Medical PLLCKirkland, WA

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

Crystal Charlotte Kostelyk among 3,781 family nurse practitioner records in Washington

Crystal Charlotte Kostelyk, 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 2015, is newer than 43% of them.

  • NPI issued2015 · 43% of these records are older, 53% 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).

43 family nurse practitioner records list a practice address in Kirkland

They are 43 of the 3,404 NPPES records with a practice address in Kirkland, and 3,781 family nurse practitioner records in Washington.

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Gary Beerman, PA-C/ARNPKirkland, WA 980331497855308
  2. Jillian Blanco, DNP, FNP-CKirkland, WA 980331548941172
  3. Tina Christian-Lenson, ARNPKirkland, WA 980331265494587
  4. Emily Dao, ARNPKirkland, WA 980331962224238
  5. Jennifer Heuberger, ARNPKirkland, WA 980331578545075
  6. Caitlin Jarvis, FNP-BC, ARNPKirkland, WA 980331477956951
  7. Sherin JosephKirkland, WA 980331881577948
  8. John Kneepkens, DNPKirkland, WA 980331992332233

Common questions

What is Crystal Charlotte Kostelyk, ARNP's NPI number?

Crystal Charlotte Kostelyk, ARNP's National Provider Identifier (NPI) is 1376916510, issued on Nov 10, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Crystal Charlotte Kostelyk, ARNP located?

The NPPES record lists a practice address at 11417 124TH Ave NE Ste 100, Kirkland, WA, 98033. Phone: (800) 640-3451. Providers update this record themselves, so call before visiting.

How can I verify Crystal Charlotte Kostelyk, ARNP's license?

NPPES lists Washington license number AP61455830, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.

How much does Crystal Charlotte Kostelyk, ARNP prescribe under Medicare Part D?

In 2024, Crystal Charlotte Kostelyk, ARNP had 360 Medicare Part D claims for 122 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.