Individual provider Active NPI

Elaine Mast

  • Certified Registered Nurse Anesthetist
  • Seattle, WA
National Provider Identifier
1609231430
Registry record updated Apr 7, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Certified Registered Nurse AnesthetistTaxonomy code 367500000X
License
AP60621373 Issued in WA
Practice address
1959 NE Pacific St
Seattle, WA 98195-6152
Phone
(206) 598-4260
NPI assigned
Dec 21, 2015
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 7, 2021

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Certified Registered Nurse Anesthetist 367500000X AP60621373 WA Primary

Addresses

Primary practice location

1959 NE Pacific St
Seattle, WA 98195-6152

Mailing address

PO Box 50095
Seattle, WA 98145-5095
Phone (206) 520-5700

Other identifiers 1

IdentifierTypeStateIssuer
1609231430MedicaidWA

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepicwa.kp.org:14430/Interconnect-CE-PRD/wcf/epic.community.hie/xcpdrespondinggatewaysync Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20160208002090 WA Practitioner - Certified Registered Nurse Anesthetist (Crna) 3779887922 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Certified Registered Nurse Anesthetist (Crna)
Education
Other, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

1959 NE Pacific St
Seattle, WA 98195-0001
Phone (206) 598-4333

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
93.85 of 100Reported as apm
Quality
74.6
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Certified Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of Washington CurrentSince Jan 2, 2019 Accepting new patients
Lake Washington Anesthesia PLLC Nurse Anesthetist, Certified Registered CurrentSince May 13, 2025 Accepting new patients
Kaiser Foundation Health Plan of Washington CurrentSince Jan 2, 2019 Accepting new patients
The Association of University Physicians CurrentSince Feb 1, 2016 Accepting new patients
Kaiser Foundation Health Plan of Washington Current Accepting new patients
Anesthesia Dynamics LLC Nurse Anesthetist, Certified Registered CurrentSince Sep 4, 2024 Accepting new patients

Locations

21600 Highway 99
Ste 260
Edmonds, WA 98026
Phone (425) 774-2650

11511 NE 10th St
Hunts Point, WA 98004
Phone (425) 502-3000

11800 NE 128th St
Ste 100
Kirkland, WA 98034
Phone (425) 899-4500

1959 NE Pacific St
Seattle, WA 98195
Phone (206) 598-4333

501 N 34th St
Ste 101
Seattle, WA 98103
Phone (206) 838-1777

200 15th Ave E
Seattle, WA 98112
Phone (206) 326-4530

9505 S Steele St
Tacoma, WA 98444
Phone (253) 597-6800

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1450656000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1617753600000",
    "number": "1609231430",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 50095",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981455095",
            "telephone_number": "206-520-5700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1959 NE PACIFIC ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981956152",
            "telephone_number": "206-598-4260"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MAST",
        "first_name": "ELAINE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-12-21",
        "last_updated": "2021-04-07",
        "certification_date": "2021-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "WA",
            "license": "AP60621373",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1609231430",
            "state": "WA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwa.kp.org:14430/Interconnect-CE-PRD/wcf/epic.community.hie/xcpdrespondinggatewaysync",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1959 NE Pacific St",
            "city": "Seattle",
            "state": "WA",
            "country_code": "US",
            "postal_code": "981956152",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 7, 2021; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.