Tien Sy Dong, M.D., PH.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

MD224637 Issued in OR

Practice address

3600 N Interstate Ave
Portland, OR 97227-1106

Phone

(800) 813-2000

NPI assigned

Jun 29, 2012

Last updated

May 26, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in WA, OR2 enrollments

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 2

Specialty

Gastroenterology

Education

University of Chicago, Pritzker School of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Kaiser Foundation Health Plan of the NorthwestGroup PAC ID 5799688230, 1,805 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Santa Monica - UCLA Med Ctr & Orthopaedic Hospital Hospital, Santa Monica, CA, CCN 050112

Merit-based Incentive Payment System (MIPS)

Final score

87.51 of 100Reported as group

Quality

79.37

Promoting interoperability

100

Improvement activities

40

Cost

73.65

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Kaiser Foundation Health Plan of the Northwest

  • General Practice Physician
  • Portland, OR
  • NPI 1184786527

  WA

  Medicare reassignment Care Compare group NPD
• Kaiser Foundation Health Plan of the Northwest

  • Clinic/Center
  • Hillsboro, OR
  • NPI 1942718622
  NPD
• Sapphire at Gresham Rehab, LLC

  • Skilled Nursing Facility
  • Gresham, OR
  • NPI 1033740899
  NPD

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

• Regents of the Univ of California

  dba Santa MonicaUCLAMC and Orthopedic Hospital

  • General Acute Care Hospital
  • Santa Monica, CA
  • NPI 1427055839
  Care Compare affiliation

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

{
    "created_epoch": "1340928000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779753600000",
    "number": "1730443177",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "500 NE MULTNOMAH ST STE 100",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972322031"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3600 N INTERSTATE AVE",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972271106",
            "telephone_number": "800-813-2000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1223 16th St Ste 3100",
            "address_purpose": "LOCATION",
            "city": "Santa Monica",
            "state": "CA",
            "postal_code": "904041275",
            "country_code": "US",
            "telephone_number": "310-582-6240",
            "fax_number": "424-259-7789",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DONG",
        "first_name": "TIEN",
        "middle_name": "SY",
        "name_prefix": "Dr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-29",
        "last_updated": "2026-05-26",
        "certification_date": "2026-05-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "WA",
            "license": "MD61677767",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A141717",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "OR",
            "license": "MD224637",
            "primary": true
        },
        {
            "code": "207RI0008X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hepatology",
            "state": "CA",
            "license": "A141717",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepicwest.kp.org:14430/interconnectprodnwm/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "1223 16th St Ste 3100",
            "city": "Santa Monica",
            "state": "CA",
            "country_code": "US",
            "postal_code": "904041275",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Colleen M Donaldson, BC-DMT, LPC-INTERN
• Nicole Donato
• Vincent Joseph Donato
• Kate Archibald Donchi, MS
• Laura Anne Donegan
• William Dong, L.AC.
• Tahra Mahan Dongon, RN
• Yutika Anand Dongre, M.D.
• Alfred Donich, LAC.
• Angela Dawn Donley, B.ED

• Gastroenterology Physician in Portland, OR
• Providers in Portland, OR by specialty
• Gastroenterology Physician in Oregon

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 26, 2026; 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.