MARGARET MACMILLAN VERNON M.D.
NPI 1144202151
Pediatrics - Pediatric Cardiology in Seattle, WA
About Margaret Macmillan Vernon M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET MACMILLAN VERNON M.D. (NPI 1144202151) is an individual pediatric cardiology provider in Seattle, Washington, licensed in Washington (MD00046913) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS and is a graduate of University Of Rochester School Of Medicine And Dentistry (2000).
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
Margaret Macmillan Vernon M.d. 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 Margaret Vernon 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
Kirkland, WA 98034
- Reassigned Medicare billing, Washington enrollment
- 1,074 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.
SEATTLE, WA 98105
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 Margaret Vernon's NPI number?
The NPI number for Margaret Vernon is 1144202151. It was assigned to this individual provider in the NPPES registry on November 16, 2005. The provider is also known as Margaret Anne Macmillan M.D..
Where is Margaret Vernon located?
Margaret Vernon practices at 4800 Sand Point Way NE Childrens Heart Center Ms G-0035, Seattle, WA 98105. The listed phone number is (206) 987-2127.
What is Margaret Vernon's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Margaret Vernon enrolled in Medicare?
Yes. Margaret Vernon 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 Margaret Vernon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Vernon reassigns Medicare benefits to 3 organizations: Association Of Chmc And University Physicians (Seattle, WA), The Association Of University Physicians (Seattle, WA) and King County Public Hospital District No 2 (Kirkland, WA). 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 Margaret Vernon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Vernon accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Margaret Vernon 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 Vernon was last updated on April 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Margaret Macmillan Vernon, M.D. · NPI 1144202151
Pediatric Cardiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since November 16, 2005.
## Identity
- **NPI:** 1144202151 (Entity type: Individual)
- **Enumerated:** November 16, 2005
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** MD00046913 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4800 SAND POINT WAY NE, CHILDRENS HEART CENTER MS G-0035, Seattle, WA 98105-3901
- **Phone:** (206) 987-2127
## 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); King County Public Hospital District No 2 (NPI 1548350713, Kirkland, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Rochester School Of Medicine And Dentistry, class of 2000
## Record status
- **NPPES last updated:** April 29, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1144202151) · Data from the CMS NPPES public registry.