NPIMap

Organization Active NPI

Virginia Mason Medical Center

  • General Acute Care Hospital
  • Seattle, WA
National Provider Identifier
1801851258
Registry record updated Oct 23, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Acute Care HospitalTaxonomy code 282N00000X
License
H-010 Issued in WA
Legal business name
VIRGINIA MASON MEDICAL CENTER
Practice address
925 Seneca St
Seattle, WA 98101-2742
Phone
(206) 223-6600
NPI assigned
Apr 19, 2006
Last updated
Oct 23, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
CATHOLIC HEALTH INITIATIVESAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Oct 23, 2026

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

Authorized official

Name
Roberta Jo Wittorf
Title
Cfo
Phone
(509) 551-5319

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Clinic/Center 261Q00000X H-010 WA
General Acute Care Hospital 282N00000X H-010 WA Primary

Addresses

Primary practice location

925 Seneca St
Seattle, WA 98101-2742

Mailing address

PO Box 741515
Los Angeles, CA 90074-1515
Phone (206) 515-5811

Other identifiers 1

IdentifierTypeStateIssuer
3315009MedicaidWA

Electronic endpoints 1

TypeEndpointUseAffiliation
CONNECT URL https://cobiusconnect.cobius.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other Cobius Healthcare Solutions

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
O20031107000383 WA Part B Supplier - Clinic/Group Practice 9830002617 Receives reassigned benefits from 1,122 practitioners
34 other NPIs on this enrollment
Practice locations: Seattle, WA; Bainbridge Island, WA; Kirkland, WA; Issaquah, WA; Federal Way, WA; Edmonds, WA; Bellevue, WA; Lynnwood, WA
O20080129000643 WA Part A Provider - Hospital 9830002617 Practice locations: Federal Way, WA; Seattle, WA

NPI to CCN mapping 1

The Medicare certification numbers (CCNs) connected to NPI 1801851258. Details of each certification follow.

Hospital certification: CCN 500005

Legal name
VIRGINIA MASON MEDICAL CENTER
Doing business as
VIRGINA MASON HOSPITAL OUTPATIENT SURGERY CENTER AT FEDERAL WAY
Certification status
Active
Provider type (POS)
Hospital – Short-term
Participating since
Jul 1, 1966
Last certification
Jun 6, 2025
Beds
336
Ownership / control type
Private (not for profit)
Organization structure
CorporationNon-profit
Incorporated
Jun 27, 1934 in WA
Enrollment address
925 Seneca St
Seattle, WA 98101-2742
Other Hospital Practice Location
Hospital subgroups
Acute care, Rehabilitation unit, Other

Other NPIs with the same Medicare PAC ID 15

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

View all 15

Other NPIs on the same Medicare enrollment 34

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

View all 34

Care Compare: Hospital

Medicare Care Compare
Listed as
Virginia Mason Medical CenterCCN 500005 · All quality measures
Overall star rating
5 of 5
Type
Acute Care Hospitals
Ownership
Voluntary non-profit - Private
Medicare certification status
ActiveFrom the Provider of Services file
Emergency services
Yes

National Provider Directory

National Provider Directory

Locations (25 of 26)

4875 Broadway
Sacramento, CA 95820
Phone (279) 224-6000

1000 N Lincoln Blvd
Ste 300
Oklahoma City, OK 73104
Phone (405) 271-1616

380 Winslow Way E
#F
Bainbridge Island, WA 98110

11695 NE 4th St
#A
Bellevue, WA 98004

7315 212th St SW
Edmonds, WA 98026
Phone (425) 252-8375

7315 212th St SW
Ste 207
Edmonds, WA 98026
Phone (425) 775-9474

13014 120th Ave NE
Kirkland, WA 98034
Phone (425) 821-8004

620 5th Ave S
Kirkland, WA 98033

1010 Spring St
Seattle, WA 98104
Phone (206) 583-6450

1021 Valley St
Seattle, WA 98109
Phone (888) 201-1937

10601 5th Ave NE
Ste 201W
Seattle, WA 98125

1100 9th Ave
#B2N
Seattle, WA 98101

1100 9th Ave
#C7
Seattle, WA 98101
Phone (206) 223-6175

1100 9th Ave
#C8
Seattle, WA 98101
Phone (206) 583-2299

1100 9th Ave
#H825
Seattle, WA 98101
Phone (206) 314-0860

1100 9th Ave
#V
Seattle, WA 98101

1100 9th Ave
#X
Seattle, WA 98101

1100 9th Ave
#X1
Seattle, WA 98101
Phone (206) 223-6729

1100 9th Ave
#X3
Seattle, WA 98101
Phone (206) 223-6664

1100 9th Ave
#X6
Seattle, WA 98101
Phone (206) 223-6824

1100 9th Ave
Ste C2PSY
Seattle, WA 98101

1100 9th Ave
Ste G250B
Seattle, WA 98101

1100 9th Ave
Ste H4
Seattle, WA 98101

1100 Olive Way
Ste 531
Seattle, WA 98101
Phone (206) 223-6762

925 Seneca St
#H825
Seattle, WA 98101

Interoperability endpoints

  • Direct secure messaging: peter.baciewicz@direct.vmmc.org

Ownership & related parties

All disclosed owners & managing parties 20

As disclosed on the Medicare enrollment (CMS All Owners files). Individuals include officers, directors and managing employees, who may not hold ownership.

NameRoleSinceShare
David Hohimer Individual Corporate DirectorBoard Member Sep 1, 2024
Robert Carlile Individual Corporate DirectorBoard Member Jan 1, 2019
Diann E Puls Individual Corporate DirectorBoard Member Jan 1, 2021
Uli Han-Hsiang CHI Individual Corporate DirectorBoard Member Jan 1, 2021
Commonspirit Health Organization, Englewood, CO Corporation, Non-profit 5% Or Greater Indirect Ownership Interest Jan 1, 2021 50%
Gregg S Meyer Individual Corporate DirectorBoard Member Jan 1, 2016
Robert Lemon Individual Corporate DirectorBoard Member Nov 15, 2011
Charles R Arnold Individual Corporate DirectorBoard Member Sep 1, 2023
Virignia Mason Franciscan Health Organization, Tacoma, WA Corporation, Non-profit 5% Or Greater Direct Ownership Interest Jan 1, 2021 100%
Arnar Hauksson Individual W-2 Managing EmployeeManager,Revenue Stream Mar 1, 2023 100%
Monica a Hilt Individual Corporate OfficerPresident, VMMC Administration Oct 6, 2023 100%
Karen T Lee Individual Corporate DirectorBoard Member Jan 1, 2019
Jenny L Wallace Individual W-2 Managing EmployeeManager, Revenue Stream Jul 16, 2024 100%
John F Oppenheimer Individual Corporate DirectorBoard Member Jan 1, 2016
Anne Lupita McNamara Individual Corporate DirectorBoard Member Sep 1, 2024
Virginia Mason Health System Organization, Seattle, WA Corporation, Non-profit 5% Or Greater Indirect Ownership Interest Jan 1, 2021 50%
Carolyn Corvi Individual Corporate DirectorBoard Member Sep 17, 2002
Ruth Elizabeth Goodwin Individual Corporate DirectorBoard Member Jan 1, 2021
Dennis Joseph Hunthausen Individual Corporate DirectorBoard Member Jan 1, 2021
Tod Hamachek Individual Corporate DirectorBoard Member Nov 20, 2007

Owners & managing parties with NPI records 1

Owners and managing parties disclosed on this facility’s Medicare enrollment that are themselves Medicare-enrolled.

Facilities with the same owner 1

Facilities that share an organizational owner with 5% or greater ownership or operational control.

Practitioners & affiliated clinicians

Practitioners 1,199

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 1,199

Affiliated clinicians 905

Clinicians who list this facility as an affiliation in Medicare Care Compare.

View all 905

NPI Registry JSON

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

{
    "created_epoch": "1145404800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1792713600000",
    "number": "1801851258",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 741515",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900741515",
            "telephone_number": "206-515-5811",
            "fax_number": "206-341-0274"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "925 SENECA ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981012742",
            "telephone_number": "206-223-6600"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "VIRGINIA MASON MEDICAL CENTER",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "CATHOLIC HEALTH INITIATIVES",
        "enumeration_date": "2006-04-19",
        "last_updated": "2026-10-23",
        "certification_date": "2026-10-23",
        "status": "A",
        "authorized_official_last_name": "WITTORF",
        "authorized_official_first_name": "ROBERTA",
        "authorized_official_middle_name": "JO",
        "authorized_official_title_or_position": "CFO",
        "authorized_official_telephone_number": "509-551-5319"
    },
    "taxonomies": [
        {
            "code": "261Q00000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center",
            "state": "WA",
            "license": "H-010",
            "primary": false
        },
        {
            "code": "282N00000X",
            "taxonomy_group": "",
            "desc": "General Acute Care Hospital",
            "state": "WA",
            "license": "H-010",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3315009",
            "state": "WA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://cobiusconnect.cobius.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.1068.1",
            "affiliationName": "Cobius Healthcare Solutions",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "address_1": "2720 Dundee Rd Ste 302",
            "city": "Northbrook",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600622609",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.