NPIMap

Individual provider Active NPI

Sergay Nicholas Agoff, MD

  • Anatomic Pathology & Clinical Pathology Physician
  • Seattle, WA
National Provider Identifier
1457468852
Registry record updated Jan 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X
License
MD00037153 Issued in WA
Practice address
325 9TH Ave
Seattle, WA 98104-2420
Phone
(206) 520-5000
NPI assigned
Aug 23, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 5, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Pathology Physician 207ZC0006X MD00037153 WA
Clinical Pathology/Laboratory Medicine Physician 207ZP0105X MD00037153 WA
Hospitalist Physician 208M00000X MD00037153 WA
Anatomic Pathology Physician 207ZP0101X MD00037153 WA
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X MD00037153 WA Primary

Addresses

Primary practice location

325 9TH Ave
Seattle, WA 98104-2420

Mailing address

PO Box 50095
Seattle, WA 98145-5095

Other practice location 1

1550 N 115th St
Seattle, WA 98133-8401
Phone (206) 520-5000

Other practice location 2

1959 NE Pacific St
Seattle, WA 98195-0001
Phone (206) 520-5000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20040602001664 WA Practitioner - Pathology 0547242653 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
Northwestern University Feinberg Medical School, 1996
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Virginia Mason Medical Center 867 clinicians

Practice addresses (Care Compare)

1100 9TH Ave
Seattle, WA 98101-2756
Phone (206) 223-6600

Hospital & facility affiliations

  • Virginia Mason Medical Center Hospital, Seattle, WA, CCN 500005
  • Jefferson Healthcare Hospital, Port Townsend, WA, CCN 501323

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
MD00037153WAMDAnatomic Pathology & Clinical Pathology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Virginia Mason Medical Center Clinical Pathology/Laboratory Medicine CurrentSince May 10, 2004 Accepting new patients
Virginia Mason Medical Center Current Accepting new patients
Virginia Mason Medical Center CurrentSince May 10, 2004 Accepting new patients

Locations

1100 9th Ave
#C6
Seattle, WA 98101
Phone (206) 341-0060

1100 Olive Way
#M4
Seattle, WA 98101

4575 Sand Point Way NE
Ste 108
Seattle, WA 98105
Phone (206) 525-8000

1100 9th Ave
Seattle, WA 98101
Phone (206) 223-6980

Interoperability endpoints

  • Direct secure messaging: nicholas.agoff@direct.vmmc.org

Organizations & group practices 17

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.

View all 17

Hospital & facility affiliations 4

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": "1156291200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767571200000",
    "number": "1457468852",
    "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"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "325 9TH AVE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981042420",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1550 N 115th St",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981338401",
            "country_code": "US",
            "telephone_number": "206-520-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1959 NE PACIFIC ST",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981950001",
            "country_code": "US",
            "telephone_number": "206-520-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "AGOFF",
        "first_name": "SERGAY",
        "middle_name": "NICHOLAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-23",
        "last_updated": "2026-01-05",
        "certification_date": "2026-01-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZC0006X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology",
            "state": "WA",
            "license": "MD00037153",
            "primary": false
        },
        {
            "code": "207ZP0105X",
            "taxonomy_group": "",
            "desc": "Pathology, Clinical Pathology/Laboratory Medicine",
            "state": "WA",
            "license": "MD00037153",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "WA",
            "license": "MD00037153",
            "primary": false
        },
        {
            "code": "207ZP0101X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology",
            "state": "WA",
            "license": "MD00037153",
            "primary": false
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "WA",
            "license": "MD00037153",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.