NPIMap

Individual provider Active NPI

Eric Seen Han Ong, M.D.

  • Nephrology Physician
  • Seattle, WA
National Provider Identifier
1376805085
Registry record updated Apr 29, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
MD61012370 Issued in WA
Practice address
904 7TH Ave
Seattle, WA 98104-1132
Phone
(206) 860-5575
NPI assigned
Jun 10, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 29, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X MD61012370 WA Primary

Addresses

Primary practice location

904 7TH Ave
Seattle, WA 98104-1132

Mailing address

7600 Evergreen Way
Everett, WA 98203-6421
Phone (206) 860-5414

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
I20200228001616 WA Practitioner - Nephrology 5597089532 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Optum Care Washington PLLCGroup PAC ID 6406752153, 684 clinicians
The Polyclinic PLLCGroup PAC ID 2163328196, 364 clinicians

Practice addresses (Care Compare)

21401 72ND Ave W
Edmonds, WA 98026-7702
Phone (425) 304-1101

9709 3Rd Ave NE
Optum Northgate Plaza Urgent Care
Seattle, WA 98115-2077
Phone (206) 401-3191

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Optum Care Washington PLLC CurrentSince May 3, 2024 Accepting new patients
The Polyclinic CurrentSince Feb 4, 2020 Accepting new patients
Swedish Health Services CurrentSince Apr 22, 2020 Accepting new patients
Optum Care Washington PLLC CurrentSince May 3, 2024 Accepting new patients
The Polyclinic PLLC Current Accepting new patients
The Polyclinic PLLC CurrentSince Feb 4, 2020 Accepting new patients
Optum Care Washington PLLC Past Accepting new patients
The Polyclinic PLLC Past Accepting new patients

Locations

7320 216th St SW
Ste 310
Edmonds, WA 98026
Phone (425) 673-3800

21401 72nd Ave W
Edmonds, WA 98026
Phone (425) 304-1101

3927 Rucker Ave
Everett, WA 98201
Phone (425) 339-5419

1330 Rockefeller Ave
Everett, WA 98201
Phone (425) 258-3903

1145 Broadway
Seattle, WA 98122

904 7th Ave
Seattle, WA 98104
Phone (206) 223-6487

9709 3rd Ave NE
Seattle, WA 98115
Phone (206) 525-5777

747 Broadway
Seattle, WA 98122
Phone (360) 658-2488

1201 N 175th St
Shoreline, WA 98133
Phone (425) 339-4299

1812 S J St
Ste 102
Tacoma, WA 98405
Phone (253) 552-4900

Interoperability endpoints

  • Direct secure messaging: eong20852@direct.tecmc.com

Organizations & group practices 8

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 7

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": "1339286400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777420800000",
    "number": "1376805085",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7600 EVERGREEN WAY",
            "city": "EVERETT",
            "state": "WA",
            "postal_code": "982036421",
            "telephone_number": "206-860-5414"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "904 7TH AVE",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981041132",
            "telephone_number": "206-860-5575"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ONG",
        "first_name": "ERIC",
        "middle_name": "SEEN HAN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-10",
        "last_updated": "2026-04-29",
        "certification_date": "2026-04-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WA",
            "license": "MD61012370",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Seattle, WA

Sources for this page

Verify at the official NPI Registry.