FREDERICK P RIVARA
NPI 1023199387
Pediatrics in Seattle, WA
About Frederick P Rivara NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
FREDERICK P RIVARA (NPI 1023199387) is an individual pediatrics provider in Seattle, Washington, licensed in Washington (MD00016804) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Frederick P Rivara is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Frederick Rivara 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
- 267 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 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 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 Frederick Rivara's NPI number?
The NPI number for Frederick Rivara is 1023199387. It was assigned to this individual provider in the NPPES registry on October 17, 2006.
Where is Frederick Rivara located?
Frederick Rivara practices at 4800 Sand Point Way NE, Seattle, WA 98105. The listed phone number is (206) 987-2000.
What is Frederick Rivara's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Frederick Rivara enrolled in Medicare?
Yes. Frederick Rivara is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Frederick Rivara's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Rivara reassigns Medicare benefits to 3 organizations: Association Of Chmc And University Physicians (Seattle, WA), Harborview Medical Center (Seattle, WA) and The Association Of University Physicians (Seattle, 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 Frederick Rivara's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Frederick Rivara accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Frederick Rivara 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 Frederick Rivara was last updated on December 11, 2007. 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.
# Frederick P Rivara · NPI 1023199387
Pediatrics physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 17, 2006.
## Identity
- **NPI:** 1023199387 (Entity type: Individual)
- **Enumerated:** October 17, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** MD00016804 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 4800 SAND POINT WAY NE, Seattle, WA 98105-3901
- **Phone:** (206) 987-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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); Harborview Medical Center (NPI 1568557312, Seattle, WA); The Association Of University Physicians (NPI 1023041159, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 11, 2007
- **Other identifiers:** Medicare UPIN A05471; Medicaid 8101040 (WA); Other 1822; and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1023199387) · Data from the CMS NPPES public registry.