NPIMap

Individual provider Active NPI

Nikki Kwoksam Duong, MD

  • Hepatology Physician
  • Palo Alto, CA
National Provider Identifier
1164884284
Registry record updated Sep 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hepatology PhysicianTaxonomy code 207RI0008X
License
A192254 Issued in CA
Practice address
300 Pasteur Dr
Palo Alto, CA 94304-2203
Phone
(650) 723-4000
NPI assigned
Mar 28, 2016
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 3, 2026

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

Specialties & licenses 5

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X A192254 CA
Transplant Hepatology Physician 207RT0003X A192254 CA
Internal Medicine Physician 207R00000X A192254 CA
Hospitalist Physician 208M00000X MD045392 DC
Hepatology Physician 207RI0008X A192254 CA Primary

Addresses

Primary practice location

300 Pasteur Dr
Palo Alto, CA 94304-2203

Mailing address

300 Pasteur Dr
Palo Alto, CA 94304-2203
Phone (650) 723-4000

Other practice location 1

3800 Reservoir Rd NW Dept Of
Washington, DC 20007-2113
Phone (202) 444-8168

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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
I20240105001417 CA Practitioner - GastroenterologyPractitioner - Internal Medicine 3173864055 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
GastroenterologyAlso: Internal Medicine
Education
George Washington University School of Medicine, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Stanford Health CareGroup PAC ID 6709797491, 3,152 clinicians

Practice addresses (Care Compare)

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
88.53 of 100Reported as group
Quality
87.08
Promoting interoperability
100
Improvement activities
40
Cost
69.51

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy25
Upper gastrointestinal (GI) endoscopy for acid reflux32

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A192254CAMDTransplant Hepatology Physician
MD045392DCMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
LPCH Medical Group Div of Lucile CurrentSince Dec 15, 2023 Accepting new patients
Stanford Health Care Internal Medicine Current Accepting new patients
Stanford Health Care CurrentSince Dec 15, 2023 Accepting new patients
Stanford Health Care CurrentSince Dec 15, 2023 Accepting new patients
Medstar Medical Group II LLC Internal Medicine Past Accepting new patients
Stanford Hospital and Clinics Past Accepting new patients
Lucile Salter Packard Children's Hospital at Stanford Past Accepting new patients

Locations

5800 Hollis St
Emeryville, CA 94608
Phone (510) 806-2100

300 Pasteur Dr
Palo Alto, CA 94304
Phone (650) 723-6469

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

Networks

  • BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

  • Direct secure messaging: nduong441520@direct.stanfordhealthcare.org

Organizations & group practices 7

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 8

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": "1459123200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1164884284",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943042203",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "PALO ALTO",
            "state": "CA",
            "postal_code": "943042203",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3800 Reservoir Rd NW Dept Of",
            "address_purpose": "LOCATION",
            "city": "Washington",
            "state": "DC",
            "postal_code": "200072113",
            "country_code": "US",
            "telephone_number": "202-444-8168",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DUONG",
        "first_name": "NIKKI",
        "middle_name": "KWOKSAM",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2016-03-28",
        "last_updated": "2026-09-03",
        "certification_date": "2026-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "A192254",
            "primary": false
        },
        {
            "code": "207RT0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Transplant Hepatology",
            "state": "CA",
            "license": "A192254",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A192254",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "DC",
            "license": "MD045392",
            "primary": false
        },
        {
            "code": "207RI0008X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hepatology",
            "state": "CA",
            "license": "A192254",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Palo Alto, CA

Sources for this page

Verify at the official NPI Registry.