Active NPI
Danielle J. Haloulos, NP
- Acute Care Nurse Practitioner
- Houston, TX
National Provider Identifier
1649114497
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Acute Care Nurse Practitioner
- License
- 1233905
- Practice address
- 1631 N Loop West
Suite 245
Houston, TX 77008-1528 - Phone
- (713) 486-8150
- Fax
- (713) 486-8155
- NPI assigned
- Apr 14, 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Acute Care Nurse Practitioner | 363LA2100X | 1233905 | TX | Primary |
| Critical Care Medicine Registered Nurse | 163WC0200X | 897440 | TX |
Addresses
Primary practice location
1631 N Loop West
Suite 245
Houston, TX 77008-1528
Mailing address
6400 Fannin St, Ste 2070
Houston, TX 77030
Phone (713) 486-8000
Other practice location 1
23960 Katy Freeway
Suite 450
Katy, TX 77494-0895
Phone (713) 486-7980
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
- Credentials
- Nurse Practitioner
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 897440 | TX | MD | Critical Care Medicine Registered Nurse |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1776124800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781568000000",
"number": "1649114497",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6400 FANNIN ST, STE 2070",
"city": "HOUSTON",
"state": "TX",
"postal_code": "77030",
"telephone_number": "713-486-8000",
"fax_number": "713-486-8088"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1631 N LOOP WEST",
"address_2": "SUITE 245",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770081528",
"telephone_number": "713-486-8150",
"fax_number": "713-486-8155"
}
],
"practiceLocations": [
{
"address_1": "23960 Katy Freeway",
"address_2": "Suite 450",
"address_purpose": "LOCATION",
"city": "Katy",
"state": "TX",
"postal_code": "774940895",
"country_code": "US",
"telephone_number": "713-486-7980",
"fax_number": "713-486-8085",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "HALOULOS",
"first_name": "DANIELLE",
"middle_name": "J.",
"name_prefix": "Ms.",
"credential": "NP",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-04-14",
"last_updated": "2026-06-16",
"certification_date": "2026-06-16",
"status": "A"
},
"taxonomies": [
{
"code": "363LA2100X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Acute Care",
"state": "TX",
"license": "1233905",
"primary": true
},
{
"code": "163WC0200X",
"taxonomy_group": "",
"desc": "Registered Nurse, Critical Care Medicine",
"state": "TX",
"license": "897440",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Houston, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 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.