ANNIE NGO MD
NPI 1619505583
Anesthesiology in Seattle, WA
About Annie Ngo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANNIE NGO MD (NPI 1619505583) is an individual anesthesiology provider in Seattle, Washington, licensed in California (A199384) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Annie Ngo Md 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 Reassignments
3Medicare enrollment records show Annie Ngo reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 clinicians in this Medicare group
Redding, CA 96001
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 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.
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.
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 Annie Ngo's NPI number?
The NPI number for Annie Ngo is 1619505583. It was assigned to this individual provider in the NPPES registry on March 27, 2020. The provider is also known as An Thuy Ngo MD.
Where is Annie Ngo located?
Annie Ngo practices at 325 9th Ave, Seattle, WA 98104. The listed phone number is (206) 520-5000.
What is Annie Ngo's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Annie Ngo enrolled in Medicare?
Yes. Annie Ngo 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 organizations bill Medicare for Annie Ngo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Annie Ngo reassigns Medicare benefits to 3 organizations: The Association Of University Physicians (Seattle, WA), Cep America - Anesthesia PC (Redding, CA) and John Muir Trauma Physicians Billing Service (Walnut Creek, CA). Each 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 Annie Ngo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Annie Ngo accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Annie Ngo 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 Annie Ngo was last updated on January 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Annie Ngo, MD · NPI 1619505583
Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since March 27, 2020.
## Identity
- **NPI:** 1619505583 (Entity type: Individual)
- **Enumerated:** March 27, 2020
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A199384 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 325 9TH AVE, Seattle, WA 98104-2420
- **Phone:** (206) 520-5000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): The Association Of University Physicians (NPI 1023041159, Seattle, WA); Cep America - Anesthesia PC (NPI 1013561851, Redding, CA); John Muir Trauma Physicians Billing Service (NPI 1962551861, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** January 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1619505583) · Data from the CMS NPPES public registry.