Active NPI
Joel Youngshin Matson, PSY.D.
- Psychologist
- Santa Ana, CA
National Provider Identifier
1790430205
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychologist
- License
- 94028474
- Practice address
- 200 W Santa Ana Blvd
Santa Ana, CA 92701-4134 - Phone
- (855) 886-5400
- NPI assigned
- Feb 14, 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 |
|---|---|---|---|---|
| Psychologist | 103T00000X | 94028474 | CA | Primary |
Addresses
Primary practice location
200 W Santa Ana Blvd
Santa Ana, CA 92701-4134
Mailing address
200 W Santa Ana Blvd
Santa Ana, CA 92701-4134
Phone (855) 886-5400
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 |
|---|---|---|---|
| 94028474 | CA | MD | Psychologist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1644796800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770854400000",
"number": "1790430205",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "200 W SANTA ANA BLVD",
"city": "SANTA ANA",
"state": "CA",
"postal_code": "927014134",
"telephone_number": "855-886-5400"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "200 W SANTA ANA BLVD",
"city": "SANTA ANA",
"state": "CA",
"postal_code": "927014134",
"telephone_number": "855-886-5400"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MATSON",
"first_name": "JOEL",
"middle_name": "YOUNGSHIN",
"name_prefix": "Dr.",
"credential": "PSY.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-02-14",
"last_updated": "2026-02-12",
"certification_date": "2026-02-12",
"status": "A"
},
"taxonomies": [
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "CA",
"license": "94028474",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Santa Ana, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 12, 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.