Active NPI
Gisselle Tretina
- School Psychologist
- Selbyville, DE
National Provider Identifier
1801706221
On this page
Key facts
NPPES NPI Registry- Primary specialty
- School Psychologist
- Practice address
- 31 Hosier St
Selbyville, DE 19975-9300 - Phone
- (302) 732-3808
- NPI assigned
- Sep 9, 2026
- Sex
- Female
- 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 |
|---|---|---|---|---|
| School Psychologist | 103TS0200X | DE | Primary |
Addresses
Primary practice location
31 Hosier St
Selbyville, DE 19975-9300
Mailing address
31 Hosier St
Selbyville, DE 19975-9300
Phone (302) 732-3808
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1788912000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1788912000000",
"number": "1801706221",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "31 HOSIER ST",
"city": "SELBYVILLE",
"state": "DE",
"postal_code": "199759300",
"telephone_number": "302-732-3808"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "31 HOSIER ST",
"city": "SELBYVILLE",
"state": "DE",
"postal_code": "199759300",
"telephone_number": "302-732-3808"
}
],
"practiceLocations": [],
"basic": {
"last_name": "TRETINA",
"first_name": "GISSELLE",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-09-09",
"last_updated": "2026-09-09",
"certification_date": "2026-09-09",
"status": "A"
},
"taxonomies": [
{
"code": "103TS0200X",
"taxonomy_group": "",
"desc": "Psychologist, School",
"state": "DE",
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Selbyville, DE
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.