MARGARET WILSON JOHNSTON DDS
NPI 1144390238
Dentist - General Practice in Seattle, WA

Q: What is Margaret Johnston's NPI number?

The NPI number for Margaret Johnston is 1144390238. It was assigned to this individual provider in the NPPES registry on November 8, 2006.

Q: What is Margaret Johnston's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Margaret Johnston was last updated on August 24, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since November 08, 2006PECOS Enrolled

133 DEXTER AVE N, SEATTLE, WA 98109(206) 324-5453(206) 323-2872 Get Directions Write a Review

NPPES record last updated: August 24, 2015. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Margaret Wilson Johnston Dds NPPES

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

MARGARET WILSON JOHNSTON DDS (NPI 1144390238) is an individual general practice provider in Seattle, Washington, licensed in Washington (DE00006302) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1144390238

Entity TypeIndividualFemale

Primary Taxonomy1223G0001X

Provider Legal NameMARGARET WILSON JOHNSTONCredential: DDS

Location Address133 DEXTER AVE NSeattle, WA 98109-5103

Mailing Address6950 Ne Campus WayHillsboro, OR 97124-5611 · (509) 952-2125

Phone(206) 324-5453

Fax(206) 323-2872

Sole ProprietorNo

Enumeration DateNovember 8, 2006

Last NPPES UpdateAugust 24, 2015

✔ NPI 1144390238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in WA · DE00006302

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

133 DEXTER AVE N, Seattle, WA 98109

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Other Identifiers 1

Medicaid5120068WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Humana.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Margaret Wilson Johnston Dds 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98109 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

$78.74 typical visit price

range $21.12 – $155.00

Typical copayment $19.68 (range $5.28 – $38.75)

Most-billed visit code 99213

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 3

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

DR. YUMI ABEI D.D.S.,M.S.D.

Dentist (Orthodontics and Dentofacial Orthopedics)

133 DEXTER AVE N
SEATTLE, WA 98109

King County (206) 324-5453

THANG C NGUYEN DDS

Dentist (General Practice)

133 DEXTER AVE N
SEATTLE, WA 98109

King County (206) 324-5453

DR. MARITES YAP DEL MUNDO DMD MS

Dentist (Orthodontics and Dentofacial Orthopedics)

133 DEXTER AVE N
SEATTLE, WA 98109

King County (206) 324-5453

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 Margaret Johnston's NPI number?

The NPI number for Margaret Johnston is 1144390238. It was assigned to this individual provider in the NPPES registry on November 8, 2006.

Where is Margaret Johnston located?

Margaret Johnston practices at 133 Dexter Ave N, Seattle, WA 98109. The listed phone number is (206) 324-5453.

What is Margaret Johnston's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Is Margaret Johnston enrolled in Medicare?

Yes. Margaret Johnston is registered in the Medicare PECOS enrollment system.

What insurance does Margaret Johnston accept?

Health plans from Humana list Margaret Johnston as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Margaret Johnston was last updated on August 24, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.