Active NPI
John Hyun Namgoong, DDS
- Dentist
- El Segundo, CA
National Provider Identifier
1578299632
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Dentist
- License
- 12961768-9921
- Practice address
- 483 N Aviation Blvd BLDG 210
El Segundo, CA 90245-2808 - Phone
- (310) 653-6844
- NPI assigned
- Jul 29, 2022
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Dentist | 122300000X | 12961768-9921 | UT | Primary |
Addresses
Primary practice location
483 N Aviation Blvd BLDG 210
El Segundo, CA 90245-2808
Mailing address
483 N Aviation Blvd BLDG 210
El Segundo, CA 90245-2808
Phone (310) 653-6844
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 12961768-9921 | UT | MD | Dentist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1659052800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757980800000",
"number": "1578299632",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "483 N AVIATION BLVD BLDG 210",
"city": "EL SEGUNDO",
"state": "CA",
"postal_code": "902452808",
"telephone_number": "310-653-6844"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "483 N AVIATION BLVD BLDG 210",
"city": "EL SEGUNDO",
"state": "CA",
"postal_code": "902452808",
"telephone_number": "310-653-6844"
}
],
"practiceLocations": [],
"basic": {
"last_name": "NAMGOONG",
"first_name": "JOHN",
"middle_name": "HYUN",
"credential": "DDS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-07-29",
"last_updated": "2025-09-16",
"certification_date": "2025-09-16",
"status": "A"
},
"taxonomies": [
{
"code": "122300000X",
"taxonomy_group": "",
"desc": "Dentist",
"state": "UT",
"license": "12961768-9921",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in El Segundo, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.