Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KELSIE HELEN WALCZAK DO
NPI 1164117495
Family Medicine in Seattle, WA

Q: What is Kelsie Walczak's NPI number?

The NPI number for Kelsie Walczak is 1164117495. It was assigned to this individual provider in the NPPES registry on April 11, 2023. The provider is also known as Kelsie Clausen.

Q: What is Kelsie Walczak's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Kelsie Walczak was last updated on October 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 11, 2023PECOS Enrolled

9709 3RD AVE NE, SEATTLE, WA 98115(206) 860-2348(206) 528-9881 Get Directions Write a Review

NPPES record last updated: October 5, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 5, 2026, May 12, 2026, Apr 11, 2023 (3 updates tracked since 2023).

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About Kelsie Helen Walczak Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

KELSIE HELEN WALCZAK DO (NPI 1164117495) is an individual family medicine provider in Seattle, Washington, licensed in Washington (OP61688263) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS, is affiliated with Valley Medical Center, and is a graduate of Pacific Nw Un Of Hs, Col Of Osteopathic Medicine (2023).

NPPES Registry Identity

NPI1164117495

Entity TypeIndividualFemale

Primary Taxonomy207Q00000X

Provider Legal NameKELSIE HELEN WALCZAKCredential: DO

Location Address9709 3RD AVE NESeattle, WA 98115-2062

Mailing Address9709 3rd Ave NeSeattle, WA 98115-2062 · (206) 860-2348 · Fax (206) 528-9881

Phone(206) 860-2348

Fax(206) 528-9881

Sole ProprietorNo

Medical School CMSPacific Nw Un Of Hs, Col Of Osteopathic MedicineGraduated 2023

Enumeration DateApril 11, 2023

Last NPPES UpdateOctober 5, 20263 updates tracked since enumeration

NPPES CertifiedOctober 5, 2026

✔ NPI 1164117495 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in WA · OP61688263

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

9709 3RD AVE NE, Seattle, WA 98115

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Other Names 1

Former Name (1)Kelsie Clausen

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kelsie Helen Walczak Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4385001155

PECOS Enrollment IDI20260720001699

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Kelsie Walczak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Polyclinic PLLC

6.0 mi

Audiologist

1145 BROADWAY
Seattle, WA 98122

Reassigned Medicare billing, Washington enrollment
911 clinicians in this Medicare group

NPI 1174594634 (206) 329-1760

Optum Care Washington PLLC

19 mi

Multi-Specialty

3901 HOYT AVE
Everett, WA 98201

Reassigned Medicare billing, Washington enrollment
1,285 clinicians in this Medicare group

NPI 1831186766 (425) 259-0966

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Valley Medical Center

Acute Care Hospitals · Renton, WA

2/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number500088

Location400 S 43rd StRenton, WA 98055 · King County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$97.43 typical visit price

range $63.67 – $189.37

Typical copayment $24.35 (range $15.91 – $47.34)

Most-billed visit code 99203

Established Patient

$111.00 typical visit price

range $21.12 – $155.00

Typical copayment $27.75 (range $5.28 – $38.75)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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