ESTHER KOO D.O.
NPI 1982019824
Family Medicine in Bellevue, WA

Active since June 30, 2014PECOS Enrolled
13451 SE 36TH ST, BELLEVUE, WA 98006(425) 562-1337(425) 562-1331 Get Directions Write a Review

NPPES record last updated: April 26, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 26, 2021, Nov 28, 2017, Oct 16, 2017 and 1 more (4 updates tracked since 2016).

About Esther Koo D.o. NPPES

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

ESTHER KOO D.O. (NPI 1982019824) is an individual family medicine provider in Bellevue, Washington, licensed in Washington (OP60742178) and active in the NPI registry since June 2014. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1982019824
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameESTHER KOOCredential: D.O.
Location Address13451 SE 36TH STBellevue, WA 98006-1454
Mailing Address13451 Se 36th StBellevue, WA 98006-1454 · (425) 562-1337 · Fax (425) 562-1331
Fax(425) 562-1331
Sole ProprietorNo
Enumeration DateJune 30, 2014
Last NPPES UpdateApril 26, 20214 updates tracked since enumeration
NPPES CertifiedApril 26, 2021
✔ NPI 1982019824 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 · OP60742178
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.
13451 SE 36TH ST, Bellevue, WA 98006

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Esther Koo D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Esther Koo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Multi-Specialty
320 WESTLAKE AVE. N., SUITE 100
Seattle, WA 98109
  • Reassigned Medicare billing, Washington enrollment
  • 2,678 clinicians in this Medicare group

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98006 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.

Psychiatry & Neurology (Psychiatry)
13451 SE 36TH ST
BELLEVUE, WA 98006
Psychiatry & Neurology (Psychiatry)
13451 SE 36TH ST
BELLEVUE, WA 98006
Pharmacist
13451 SE 36TH ST
BELLEVUE, WA 98006
Dietitian, Registered
13451 SE 36TH ST
BELLEVUE, WA 98006
Psychiatry & Neurology (Child & Adolescent Psychiatry)
13451 SE 36TH ST
BELLEVUE, WA 98006
Psychologist (Clinical)
13451 SE 36TH ST
BELLEVUE, WA 98006
Family Medicine
13451 SE 36TH ST
BELLEVUE, WA 98006
Social Worker (Clinical)
13451 SE 36TH ST
BELLEVUE, WA 98006

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Esther Koo's NPI number?

The NPI number for Esther Koo is 1982019824. It was assigned to this individual provider in the NPPES registry on June 30, 2014.

Where is Esther Koo located?

Esther Koo practices at 13451 SE 36th St, Bellevue, WA 98006. The listed phone number is (425) 562-1337.

What is Esther Koo's specialty?

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

Is Esther Koo enrolled in Medicare?

Yes. Esther Koo is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Esther Koo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Esther Koo reassigns Medicare benefits to Kaiser Foundation Health Plan Of Washington (Seattle, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Esther Koo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Esther Koo was last updated on April 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.