ALEXANDER DENNY D.O.
NPI 1255697462
Anesthesiology in Seattle, WA
About Alexander Denny D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER DENNY D.O. (NPI 1255697462) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (OP60640684) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
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)
Alexander Denny D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Alexander Denny reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vancouver, WA 98664
- Reassigned Medicare billing, Washington enrollment
- 155 clinicians in this Medicare group
Beaver Dam, WI 53916
- Reassigned Medicare billing, Wisconsin enrollment
- 606 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 2
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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 98133
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 Alexander Denny's NPI number?
The NPI number for Alexander Denny is 1255697462. It was assigned to this individual provider in the NPPES registry on April 2, 2012.
Where is Alexander Denny located?
Alexander Denny practices at 1550 N 115th St, Seattle, WA 98133. The listed phone number is (206) 364-0500.
What is Alexander Denny's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Alexander Denny enrolled in Medicare?
Yes. Alexander Denny is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alexander Denny's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Denny reassigns Medicare benefits to 2 organizations: Columbia Anesthesia Group P S (Vancouver, WA) and Agnesian Healthcare (Beaver Dam, WI). 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 Alexander Denny's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Denny accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Alexander Denny 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 Alexander Denny was last updated on August 24, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Alexander Denny, D.O. · NPI 1255697462
Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since April 2, 2012.
## Identity
- **NPI:** 1255697462 (Entity type: Individual)
- **Enumerated:** April 2, 2012
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** OP60640684 (Washington)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1550 N 115TH ST, Seattle, WA 98133-8401
- **Phone:** (206) 364-0500
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Columbia Anesthesia Group P S (NPI 1861448235, Vancouver, WA); Agnesian Healthcare (NPI 1700817657, Beaver Dam, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 24, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1255697462) · Data from the CMS NPPES public registry.