Ray Mun Koo

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

TR70062707 Issued in WA

Practice address

825 Eastlake Ave E
Seattle, WA 98109-4405

Phone

(206) 520-5000

NPI assigned

Dec 30, 2025

Sex

Unspecified or another gender identity

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in WA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Hematology/OncologyAlso: Internal Medicine

Education

Other, 2012

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)

Hospital & facility affiliations

• University of Washington Medical Ctr Hospital, Seattle, WA, CCN 500008
• Fred Hutchinson Cancer Center Hospital, Seattle, WA, CCN 500138

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• The Association of University Physicians

  • Anesthesiology Physician
  • Seattle, WA
  • NPI 1023041159

  Internal Medicine

  Medicare reassignment Care Compare group NPD

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

• Fred Hutchinson Cancer Center

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1164493847
  Care Compare affiliation
• Fred Hutchinson Cancer Center

  • Community/Retail Pharmacy
  • Seattle, WA
  • NPI 1356415699

  Hospital

  Care Compare affiliation
• University of Washington

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1326002049
  Care Compare affiliation

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

{
    "created_epoch": "1767052800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767052800000",
    "number": "1942166327",
    "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": [],
    "basic": {
        "last_name": "KOO",
        "first_name": "RAY MUN",
        "sole_proprietor": "NO",
        "sex": "X",
        "enumeration_date": "2025-12-30",
        "last_updated": "2025-12-30",
        "certification_date": "2025-12-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WA",
            "license": "TR70062707",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WA",
            "license": "TR70062707",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Donghyun Koo
• Jahyun Koo, D.D.S
• Justin Koo
• Karen Kin-Yue Koo, MD
• Kevin Shiu Hong Koo, M D
• Samuel S. Koo, MD, MPH
• Nicholas James Koogler, DDS
• Jamie Kooiman, PHARMD
• Preetma Kaur Kooner, MD
• Jason Koop

• Hematology & Oncology Physician in Seattle, WA
• Providers in Seattle, WA by specialty
• Hematology & Oncology Physician in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 30, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.