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JONATHAN FINK MOSSER MD
NPI 1639448947
Pediatrics - Pediatric Infectious Diseases in Seattle, WA

Active since December 16, 2011PECOS Enrolled
4800 SAND POINT WAY NE # OC.7830, SEATTLE, WA 98105(206) 520-5000 Get Directions Write a Review

NPPES record last updated: June 17, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Jonathan Fink Mosser Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JONATHAN FINK MOSSER MD (NPI 1639448947) is an individual pediatric infectious diseases provider in Seattle, Washington, licensed in Washington (MD60657190) and active in the NPI registry since December 2011. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1639448947
Entity TypeIndividualMale
Primary Taxonomy2080P0208X
Provider Legal NameJONATHAN FINK MOSSERCredential: MD
Location Address4800 SAND POINT WAY NE # OC.7830Seattle, WA 98105-3901
Mailing Address4800 Sand Point Way Ne # Oc.7830Seattle, WA 98105-3901
Phone(206) 520-5000
Sole ProprietorNo
Enumeration DateDecember 16, 2011
Last NPPES UpdateJune 17, 2019
✔ NPI 1639448947 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
License✔ Licensed in WA · MD60657190
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
Also ListedPediatricsTaxonomy 208000000X · License ML60368564 (WA)
4800 SAND POINT WAY NE # OC.7830, Seattle, WA 98105
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Other Identifiers 1

Medicaid1639448947WA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jonathan Fink Mosser Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Jonathan Mosser reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Association Of Chmc And University Physicians
0.1 mi
Trauma Surgery
4800 SAND POINT WAY NE
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
NPI 1649497827 (206) 987-2000
The Association Of University Physicians
4.6 mi
Anesthesiology
701 5TH AVE, SUITE 700
Seattle, WA 98104
  • Reassigned Medicare billing, Washington enrollment
  • 4,364 clinicians in this Medicare group
NPI 1023041159 (206) 543-6420

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.

ISABELLE MARIA KIEFABER
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
MADELINE ANN LEONARD MD
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
NETA SIMON MD
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
SARAH AILAN NGUYEN
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
NICHOLAS BORIS DIMENSTEIN MD, MPH
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
KATARINA MANZI MD
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
AVANI PRAKASH SHAH DO
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525
CRYSTAL MEI LAN
Pediatrics
4800 SAND POINT WAY NE # OC.7830
SEATTLE, WA 98105
King County (206) 987-2525

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 Jonathan Mosser's NPI number?

The NPI number for Jonathan Mosser is 1639448947. It was assigned to this individual provider in the NPPES registry on December 16, 2011.

Where is Jonathan Mosser located?

Jonathan Mosser practices at 4800 Sand Point Way NE # Oc.7830, Seattle, WA 98105. The listed phone number is (206) 520-5000.

What is Jonathan Mosser's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Jonathan Mosser enrolled in Medicare?

Yes. Jonathan Mosser is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jonathan Mosser's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Mosser reassigns Medicare benefits to 2 organizations: Association Of Chmc And University Physicians (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 Jonathan Mosser's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jonathan Mosser accept?

Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Jonathan Mosser 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 Jonathan Mosser was last updated on June 17, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.