DR. CHARLES LYON STEWART DNP, PMHNP
NPI 1144946757
Nurse Practitioner - Psychiatric/Mental Health in Seattle, WA
About Dr. Charles Lyon Stewart Dnp, Pmhnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHARLES LYON STEWART DNP, PMHNP (NPI 1144946757) is an individual psychiatric/mental health provider in Seattle, Washington, licensed in Washington (ARNP.AP.70021445-NP) and active in the NPI registry since October 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Charles Lyon Stewart Dnp, Pmhnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Charles Stewart reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Kent, WA 98032
- Reassigned Medicare billing, Washington enrollment
- 125 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 98133 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
SEATTLE, WA 98133
SEATTLE, WA 98133
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 Charles Stewart's NPI number?
The NPI number for Charles Stewart is 1144946757. It was assigned to this individual provider in the NPPES registry on October 14, 2022.
Where is Charles Stewart located?
Charles Stewart practices at 10521 Meridian Ave N, Seattle, WA 98133. The listed phone number is (253) 822-7444.
What is Charles Stewart's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Charles Stewart enrolled in Medicare?
Yes. Charles Stewart is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Charles Stewart's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Stewart reassigns Medicare benefits to Valley Cities Counseling And Consultation (Kent, 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 Charles Stewart's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Charles Stewart accept?
Health plans from Ambetter Health and Premera Blue Cross Blue Shield of Alaska list Charles Stewart 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 Charles Stewart was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Dr. Charles Lyon Stewart, DNP, PMHNP · NPI 1144946757
Psychiatric/Mental Health physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 14, 2022.
## Identity
- **NPI:** 1144946757 (Entity type: Individual)
- **Enumerated:** October 14, 2022
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** ARNP.AP.70021445-NP (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 10521 MERIDIAN AVE N, Seattle, WA 98133-9509
- **Phone:** (253) 822-7444
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Valley Cities Counseling And Consultation (NPI 1972668853, Kent, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** August 18, 2026
- **Other identifiers:** Medicaid 2362415 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1144946757) · Data from the CMS NPPES public registry.