STEPHEN PAUL SESLAR M.D.
NPI 1326119181
Pediatrics - Pediatric Cardiology in Seattle, WA
About Stephen Paul Seslar M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN PAUL SESLAR M.D. (NPI 1326119181) is an individual pediatric cardiology provider in Seattle, Washington, licensed in Washington (MD00049087) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Seattle Children's Hospital, and is a graduate of Georgetown University School Of Medicine (1996).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
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
Stephen Paul Seslar 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
4Medicare enrollment records show Stephen Seslar reassigns Medicare billing to 4 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 98109
- Reassigned Medicare billing, Washington enrollment
- 2,678 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.
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, WAOther 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 Stephen Seslar's NPI number?
The NPI number for Stephen Seslar is 1326119181. It was assigned to this individual provider in the NPPES registry on November 13, 2006.
Where is Stephen Seslar located?
Stephen Seslar practices at 4800 Sand Point Way NE, Seattle, WA 98105. The listed phone number is (206) 987-2000.
What is Stephen Seslar's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Stephen Seslar enrolled in Medicare?
Yes. Stephen Seslar 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 Stephen Seslar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Seslar reassigns Medicare benefits to 4 organizations: Association Of Chmc And University Physicians (Seattle, WA), Kaiser Foundation Health Plan Of Washington (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 Stephen Seslar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Seslar accept?
Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Stephen Seslar 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 Stephen Seslar affiliated with any hospitals?
According to CMS data, Stephen Seslar is affiliated with Seattle Children's Hospital.
When was this NPI record last updated?
The NPPES record for Stephen Seslar was last updated on February 17, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Stephen Paul Seslar, M.D. · NPI 1326119181
Pediatric Cardiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since November 13, 2006.
## Identity
- **NPI:** 1326119181 (Entity type: Individual)
- **Enumerated:** November 13, 2006
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** MD00049087 (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:** 4 organizations under Medicare reassignment (form CMS-855R): Association Of Chmc And University Physicians (NPI 1649497827, Seattle, WA); Kaiser Foundation Health Plan Of Washington (NPI 1396810701, 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:** Georgetown University School Of Medicine, class of 1996
## Record status
- **NPPES last updated:** February 17, 2009
- **Other identifiers:** Medicare ID-Type Unspecified WA64514B (CA); Medicaid 00A645140 (CA); Medicare UPIN H11530 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1326119181) · Data from the CMS NPPES public registry.