JOSEPH C PFEIFER
NPI 1235935206
Nurse Practitioner - Critical Care Medicine in Seattle, WA
About Joseph C Pfeifer NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH C PFEIFER (NPI 1235935206) is an individual critical care medicine provider in Seattle, Washington, licensed in Washington (AP70032474) and active in the NPI registry since February 2025. He is enrolled in Medicare PECOS and is a graduate of Other (2025).
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 (PECOS)
Joseph C Pfeifer is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Joseph Pfeifer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Seattle, WA 98101
- Reassigned Medicare billing, Washington enrollment
- 1,021 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 98101 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.
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 Joseph Pfeifer's NPI number?
The NPI number for Joseph Pfeifer is 1235935206. It was assigned to this individual provider in the NPPES registry on February 20, 2025.
Where is Joseph Pfeifer located?
Joseph Pfeifer practices at 1100 9th Ave, Seattle, WA 98101. The listed phone number is (206) 624-1144.
What is Joseph Pfeifer's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is Joseph Pfeifer enrolled in Medicare?
Yes. Joseph Pfeifer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Joseph Pfeifer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Pfeifer reassigns Medicare benefits to Virginia Mason Medical Center (Seattle, WA). The 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 Joseph Pfeifer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Pfeifer accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Joseph Pfeifer 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 Joseph Pfeifer was last updated on July 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Joseph C Pfeifer · NPI 1235935206
Critical Care Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since February 20, 2025.
## Identity
- **NPI:** 1235935206 (Entity type: Individual)
- **Enumerated:** February 20, 2025
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** AP70032474 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1100 9TH AVE, Seattle, WA 98101-2756
- **Phone:** (206) 624-1144
## 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:** Virginia Mason Medical Center (NPI 1003970989, Seattle, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** July 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1235935206) · Data from the CMS NPPES public registry.