HAMISH M GREENAWAY MD
NPI 1457671356
Anesthesiology in Seattle, WA
About Hamish M Greenaway Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAMISH M GREENAWAY MD (NPI 1457671356) is an individual anesthesiology provider in Seattle, Washington, licensed in Washington (60474172) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Providence St Peter Hospital, and is a graduate of Albany Medical College Of Union University (2010).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Hamish M Greenaway 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 Reassignment
Medicare enrollment records show Hamish Greenaway reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tacoma, WA 98405
- Reassigned Medicare billing, Washington enrollment
- 152 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 4
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.
Providence St Peter Hospital
Acute Care Hospitals · Olympia, WAOther 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 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
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 Hamish Greenaway's NPI number?
The NPI number for Hamish Greenaway is 1457671356. It was assigned to this individual provider in the NPPES registry on June 3, 2010.
Where is Hamish Greenaway located?
Hamish Greenaway practices at 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (206) 598-4260.
What is Hamish Greenaway's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Hamish Greenaway enrolled in Medicare?
Yes. Hamish Greenaway 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 organization bills Medicare for Hamish Greenaway's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hamish Greenaway reassigns Medicare benefits to Pacific Anesthesia PC (Tacoma, 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 Hamish Greenaway's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Hamish Greenaway affiliated with any hospitals?
According to CMS data, Hamish Greenaway is affiliated with Providence St Peter Hospital.
When was this NPI record last updated?
The NPPES record for Hamish Greenaway was last updated on September 30, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Hamish M Greenaway, MD · NPI 1457671356
Anesthesiology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since June 3, 2010.
## Identity
- **NPI:** 1457671356 (Entity type: Individual)
- **Enumerated:** June 3, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 60474172 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1959 NE PACIFIC ST, Seattle, WA 98195-0001
- **Phone:** (206) 598-4260
## 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:** Pacific Anesthesia PC (NPI 1497796452, Tacoma, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Albany Medical College Of Union University, class of 2010
## Record status
- **NPPES last updated:** September 30, 2014
- **Other identifiers:** Medicare PIN 8929094 (WA); Medicaid 1457671356 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1457671356) · Data from the CMS NPPES public registry.