ANN SIU-LON NG MD
NPI 1649530148
Anesthesiology - Pediatric Anesthesiology in Seattle, WA
About Ann Siu-lon Ng Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ANN SIU-LON NG MD (NPI 1649530148) is an individual pediatric anesthesiology provider in Seattle, Washington, licensed in Washington (MD61507018) and active in the NPI registry since May 2012. She is enrolled in Medicare PECOS, is affiliated with Seattle Children's Hospital, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
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
Ann Siu-lon Ng 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 Ann Ng reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98105
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: The Association Of Chrmc And University Physicians
- 1,443 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Texas Childrens Physician Group
- 2,498 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Seattle Children's Hospital
Childrens · Seattle, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98105 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 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
SEATTLE, WA 98105
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 Ann Ng's NPI number?
The NPI number for Ann Ng is 1649530148. It was assigned to this individual provider in the NPPES registry on May 18, 2012.
Where is Ann Ng located?
Ann Ng practices at 4800 Sand Point Way NE, Seattle, WA 98105. The listed phone number is (206) 987-2000.
What is Ann Ng's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pediatric Anesthesiology, with taxonomy code 207LP3000X.
Is Ann Ng enrolled in Medicare?
Yes. Ann Ng 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 Ann Ng's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ann Ng reassigns Medicare benefits to 3 organizations: Association Of Chmc And University Physicians (Seattle, WA), The Association Of University Physicians (Seattle, WA) and Texas Children's Physician Group (Houston, TX). 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 Ann Ng's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ann Ng accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Ann Ng 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.
Is Ann Ng affiliated with any hospitals?
According to CMS data, Ann Ng is affiliated with Seattle Children's Hospital.
When was this NPI record last updated?
The NPPES record for Ann Ng was last updated on February 12, 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.
# Ann Siu-Lon Ng, MD · NPI 1649530148
Pediatric Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since May 18, 2012.
## Identity
- **NPI:** 1649530148 (Entity type: Individual)
- **Enumerated:** May 18, 2012
- **Primary specialty:** Anesthesiology - Pediatric Anesthesiology · taxonomy 207LP3000X
- **State license:** MD61507018 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4800 SAND POINT WAY NE, Seattle, WA 98105-3901
- **Phone:** (206) 987-2000
## 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): Association Of Chmc And University Physicians (NPI 1649497827, Seattle, WA); The Association Of University Physicians (NPI 1023041159, Seattle, WA); Texas Children's Physician Group (NPI 1861675506, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** February 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1649530148) · Data from the CMS NPPES public registry.