Hyun Don Yun M.D. PC

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Legal business name

HYUN DON YUN M.D. PC

Practice address

4950 Barranca Pkwy Ste 210
Irvine, CA 92604-8648

Phone

(949) 414-9337

Fax

(949) 402-0100

NPI assigned

Jun 15, 2026

Organization subpart

No

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

Authorized official

Name

Dr. Hyun Don Yun, MDNPI 1508090473

Title

President/Owner

Phone

(949) 414-9337

Specialties & licenses 2

Addresses

Other names 1

• GaNaDa Medical Doing business as

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Hyun Don Yun, MD

  • Hematology & Oncology Physician
  • Irvine, CA
  • NPI 1508090473

  Internal Medicine

  NPD Authorized official

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

{
    "created_epoch": "1781481600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787270400000",
    "number": "1528993151",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4950 BARRANCA PKWY STE 210",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926048648",
            "telephone_number": "949-414-9337",
            "fax_number": "949-402-0100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4950 BARRANCA PKWY STE 210",
            "city": "IRVINE",
            "state": "CA",
            "postal_code": "926048648",
            "telephone_number": "949-414-9337",
            "fax_number": "949-402-0100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "HYUN DON YUN M.D. PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-06-15",
        "last_updated": "2026-08-21",
        "certification_date": "2026-08-21",
        "status": "A",
        "authorized_official_last_name": "YUN",
        "authorized_official_first_name": "HYUN DON",
        "authorized_official_title_or_position": "PRESIDENT/OWNER",
        "authorized_official_telephone_number": "949-414-9337",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "GaNaDa Medical",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Nahal Nichole Hydaryacil, PSYD
• Hyesun Kim, M.D., Inc.
• Steven Andrew Hyjek, DC
• Tamara Jeanne Hyland, LMFT
• Deborah Helen Hyman, OTR
• Hyun Therapy, Inc.
• Helen Hyun, LMFT
• Hyunjung Holly Park, D.D.S., Inc.
• I. Lane Wong, M.D. Inc.
• Robert Paul Iannessa Jr., DC

• Internal Medicine Physician in Irvine, CA
• Providers in Irvine, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.