MICHAEL J LARSON MD
NPI 1326080573
Emergency Medicine in Lakewood, WA
About Michael J Larson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL J LARSON MD (NPI 1326080573) is an individual emergency medicine provider in Lakewood, Washington, licensed in Washington (MD00038582) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Regional West Medical Center, and maintains a secondary practice location in Olympia.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
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
Michael J Larson Md 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
2Medicare enrollment records show Michael Larson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Renton, WA 98057
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Regional West Medical Center
Acute Care Hospitals · Scottsbluff, NEPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98499 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 Michael Larson's NPI number?
The NPI number for Michael Larson is 1326080573. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is Michael Larson located?
Michael Larson practices at 11315 Bridgeport Way SW, Lakewood, WA 98499. The listed phone number is (253) 588-1711.
What is Michael Larson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Larson enrolled in Medicare?
Yes. Michael Larson 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 Michael Larson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Larson reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of Washington (Renton, WA) and Northwest Emergency Physicians LLC (Arlington, 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 Michael Larson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Larson affiliated with any hospitals?
According to CMS data, Michael Larson is affiliated with Regional West Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Larson was last updated on April 26, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Michael J Larson, MD · NPI 1326080573
Emergency Medicine physician in Lakewood, Washington. Individual provider, active in the CMS NPPES registry since June 12, 2006.
## Identity
- **NPI:** 1326080573 (Entity type: Individual)
- **Enumerated:** June 12, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD00038582 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 11315 BRIDGEPORT WAY SW, Lakewood, WA 98499-3004
- **Phone:** (253) 588-1711 · **Fax:** (253) 838-6418
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Kaiser Foundation Health Plan Of Washington (NPI 1124264577, Renton, WA); Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** St. Louis College Of Physicians And Surgeons, class of 1996
## Record status
- **NPPES last updated:** April 26, 2021
- **Other identifiers:** Medicaid 8254039 (WA); Other 0176597 (WA); Other 2164LA (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1326080573) · Data from the CMS NPPES public registry.