John Young Ko, DO

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

DO3792 Issued in NV

Practice address

620 Shadow LN
Las Vegas, NV 89106-4119

Phone

(702) 388-8436

NPI assigned

Jun 28, 2022

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in NV

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

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

{
    "created_epoch": "1656374400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774828800000",
    "number": "1033841101",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "620 SHADOW LN",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891064119",
            "telephone_number": "702-388-8436"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "620 SHADOW LN",
            "city": "LAS VEGAS",
            "state": "NV",
            "postal_code": "891064119",
            "telephone_number": "702-388-8436"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KO",
        "first_name": "JOHN",
        "middle_name": "YOUNG",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2022-06-28",
        "last_updated": "2026-03-30",
        "certification_date": "2026-03-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "NV",
            "license": "DO3792",
            "primary": true
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "NV",
            "license": "DO3792",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NV",
            "license": "SL1890",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Martha Knutsen, M.D.
• Alexis Joy Knutson
• Kristina M Knutson, R.N.
• Ryan Knutson, RN
• Victor Keith Knutzen, MD, FACS, FACOG.
• Miwah Ko, CCC
• Suk Hui Ko
• Brooke Aika Kobashigawa
• Carol Ann Kobashigawa, FNP
• Herminia Kobayashi

• Gastroenterology Physician in Las Vegas, NV
• Providers in Las Vegas, NV by specialty
• Gastroenterology Physician in Nevada

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 30, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.