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

MRS. JOANNA STAGG MA, PSYD
NPI 1184938144
Psychologist - Clinical in Seattle, WA

Active since August 02, 2010PECOS Enrolled
5150 S ORCAS ST, SEATTLE, WA 98118(206) 580-3160 Get Directions Write a Review

NPPES record last updated: October 28, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 28, 2026, Sep 24, 2026 (2 updates tracked since 2026).

About Mrs. Joanna Stagg Ma, Psyd NPPES

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

MRS. JOANNA STAGG MA, PSYD (NPI 1184938144) is an individual clinical provider in Seattle, Washington, licensed in Washington (PY60190304) and active in the NPI registry since August 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1184938144
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameMRS. JOANNA STAGGCredential: MA, PSYD
Location Address5150 S ORCAS STSeattle, WA 98118-2561
Mailing Address5150 S Orcas StSeattle, WA 98118-2561 · (206) 580-3160
Phone(206) 580-3160
Sole ProprietorNo
Enumeration DateAugust 2, 2010
Last NPPES UpdateOctober 28, 20262 updates tracked since enumeration
NPPES CertifiedOctober 28, 2026
✔ NPI 1184938144 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in WA · PY60190304
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
5150 S ORCAS ST, Seattle, WA 98118
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Joanna Stagg Ma, Psyd 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 Joanna Stagg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of Washington
5.8 mi
Multi-Specialty
320 WESTLAKE AVE. N., SUITE 100
Seattle, WA 98109
  • Reassigned Medicare billing, Washington enrollment
  • 2,678 clinicians in this Medicare group
NPI 1396810701 (206) 448-6561

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 98118 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
$189.37 typical visit price
range $63.67 – $189.37
Typical copayment $47.34 (range $15.91 – $47.34)
Most-billed visit code 99205
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

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

JOANNA STAGG, PLLC
Psychologist (Clinical)
5150 S ORCAS ST
SEATTLE, WA 98118
King County (206) 580-3160

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 Joanna Stagg's NPI number?

The NPI number for Joanna Stagg is 1184938144. It was assigned to this individual provider in the NPPES registry on August 2, 2010.

Where is Joanna Stagg located?

Joanna Stagg practices at 5150 S Orcas St, Seattle, WA 98118. The listed phone number is (206) 580-3160.

What is Joanna Stagg's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Joanna Stagg enrolled in Medicare?

Yes. Joanna Stagg is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Joanna Stagg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joanna Stagg 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 Joanna Stagg'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 Joanna Stagg was last updated on October 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.