Active NPI
Tanya Gustin
- Marriage & Family Therapist
- Fullerton, CA
National Provider Identifier
1063393676
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Marriage & Family Therapist
- License
- LMFT104475
- Practice address
- 1100 W Olive Ave
Fullerton, CA 92833-4132 - Phone
- (714) 447-7775
- NPI assigned
- Sep 10, 2025
- Sex
- Female
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Marriage & Family Therapist | 106H00000X | LMFT104475 | CA | Primary |
Addresses
Primary practice location
1100 W Olive Ave
Fullerton, CA 92833-4132
Mailing address
1100 W Olive Ave
Fullerton, CA 92833-4132
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 |
|---|---|---|---|
| LMFT104475 | CA | MD | Marriage & Family Therapist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1757462400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757462400000",
"number": "1063393676",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1100 W OLIVE AVE",
"city": "FULLERTON",
"state": "CA",
"postal_code": "928334132"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1100 W OLIVE AVE",
"city": "FULLERTON",
"state": "CA",
"postal_code": "928334132",
"telephone_number": "714-447-7775"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GUSTIN",
"first_name": "TANYA",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2025-09-10",
"last_updated": "2025-09-10",
"certification_date": "2025-09-10",
"status": "A"
},
"taxonomies": [
{
"code": "106H00000X",
"taxonomy_group": "",
"desc": "Marriage & Family Therapist",
"state": "CA",
"license": "LMFT104475",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Fullerton, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 10, 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.