JOHN A. LARSEN MD
NPI 1932128576
Anesthesiology in Lakewood, WA
About John A. Larsen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN A. LARSEN MD (NPI 1932128576) is an individual anesthesiology provider in Lakewood, Washington, licensed in Washington (MD00043782) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John A. Larsen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Larsen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portland, OR 97205
- Reassigned Medicare billing, Washington enrollment
- 180 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.
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 John Larsen's NPI number?
The NPI number for John Larsen is 1932128576. It was assigned to this individual provider in the NPPES registry on July 18, 2006.
Where is John Larsen located?
John Larsen practices at 11315 Bridgeport Way SW, Lakewood, WA 98499. The listed phone number is (253) 985-6403.
What is John Larsen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Larsen enrolled in Medicare?
Yes. John Larsen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Larsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Larsen reassigns Medicare benefits to Oregon Anesthesiology Group PC (Portland, OR). 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 John Larsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Larsen was last updated on August 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# John A. Larsen, MD · NPI 1932128576
Anesthesiology physician in Lakewood, Washington. Individual provider, active in the CMS NPPES registry since July 18, 2006.
## Identity
- **NPI:** 1932128576 (Entity type: Individual)
- **Enumerated:** July 18, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD00043782 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 11315 BRIDGEPORT WAY SW, Lakewood, WA 98499-3004
- **Phone:** (253) 985-6403 · **Fax:** (253) 985-2948
## 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:** Oregon Anesthesiology Group PC (NPI 1477527786, Portland, OR), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 21, 2020
- **Other identifiers:** Medicaid 1120435 (WA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1932128576) · Data from the CMS NPPES public registry.