NPIMap

Individual provider Active NPI

Sasha Oommen Joseph, M.D.

  • Hematology & Oncology Physician
  • Seattle, WA
National Provider Identifier
1053576710
Registry record updated Jul 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
MD.MD.60383925 Issued in WA
Practice address
825 Eastlake Ave E
Seattle, WA 98109-4405
Phone
(206) 520-5000
NPI assigned
Jul 22, 2008
Last updated
Jul 17, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 17, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X MD.MD.60383925 WA
Hematology & Oncology Physician 207RH0003X MD.MD.60383925 WA Primary
Medical Oncology Physician 207RX0202X MD.MD.60383925 WA

Addresses

Primary practice location

825 Eastlake Ave E
Seattle, WA 98109-4405

Mailing address

PO Box 50095
Seattle, WA 98145-5095

Other practice location 1

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

Other practice location 2

1560 N 115th St
Seattle, WA 98133-8414
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
I20130812000790 WA Practitioner - Medical OncologyPractitioner - Internal Medicine 2769520527 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Medical OncologyAlso: Internal Medicine
Education
Temple University School of Medicine, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

825 Eastlake Ave E
Seattle, WA 98109-4405
Phone (206) 288-1000

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
The Association of University Physicians Internal Medicine CurrentSince Apr 1, 2025 Accepting new patients
Multicare Health System Hematology CurrentSince Nov 1, 2017 Accepting new patients
Multicare Health System CurrentSince Nov 1, 2017 Accepting new patients
Multicare Health System Current Accepting new patients

Locations

4700 Point Fosdick Dr
Ste 104
Gig Harbor, WA 98335
Phone (253) 459-7590

222 State Ave N
Kent, WA 98030
Phone (253) 372-7680

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

825 Eastlake Ave E
Seattle, WA 98109
Phone (206) 288-1000

311 S L St
Tacoma, WA 98405
Phone (253) 403-1444

315 S K St
Tacoma, WA 98405
Phone (253) 403-1291

Interoperability endpoints

  • Direct secure messaging: sjoseph1738167@direct.ehre.uwmedicine.org

Organizations & group practices 4

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

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": "1216684800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1053576710",
    "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": "825 EASTLAKE AVE E",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981094405",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [
        {
            "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"
        },
        {
            "address_1": "1560 N 115th St",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981338414",
            "country_code": "US",
            "telephone_number": "206-520-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JOSEPH",
        "first_name": "SASHA",
        "middle_name": "OOMMEN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-07-22",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "MD.MD.60383925",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WA",
            "license": "MD.MD.60383925",
            "primary": true
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "WA",
            "license": "MD.MD.60383925",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.