Active NPI
Emily Isabella O'Brien, APRN
- Gerontology Nurse Practitioner
- Louisville, KY
National Provider Identifier
1699615815
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Gerontology Nurse Practitioner
- License
- 4015045
- Practice address
- 4402 Churchman Ave Ste 201
Louisville, KY 40215-3100 - Phone
- (502) 955-1355
- NPI assigned
- Mar 30, 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Registered Nurse | 163W00000X | 4015045 | KY | |
| Nurse Practitioner | 363L00000X | 4015045 | KY | |
| Gerontology Nurse Practitioner | 363LG0600X | 4015045 | KY | Primary |
Addresses
Primary practice location
4402 Churchman Ave Ste 201
Louisville, KY 40215-3100
Mailing address
PO Box 909
Louisville, KY 40201-0909
Phone (502) 955-1355
Other practice location 1
3920 Dutchmans Ln Ste 300
Louisville, KY 40207-4702
Phone (502) 895-8970
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Care Compare profile
Medicare Care Compare- Specialty
- Nurse Practitioner
- Education
- Other, 2026
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
PO Box
Suite 909
Louisville, KY 40201
PO Box
Suite 909
Louisville, KY 40201-0909
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 4015045 | KY | MD | Registered Nurse |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1774828800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1788307200000",
"number": "1699615815",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 909",
"city": "LOUISVILLE",
"state": "KY",
"postal_code": "402010909",
"telephone_number": "502-955-1355"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "4402 CHURCHMAN AVE STE 201",
"city": "LOUISVILLE",
"state": "KY",
"postal_code": "402153100",
"telephone_number": "502-955-1355"
}
],
"practiceLocations": [
{
"address_1": "3920 Dutchmans Ln Ste 300",
"address_purpose": "LOCATION",
"city": "Louisville",
"state": "KY",
"postal_code": "402074702",
"country_code": "US",
"telephone_number": "502-895-8970",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "O'BRIEN",
"first_name": "EMILY",
"middle_name": "ISABELLA",
"credential": "APRN",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-03-30",
"last_updated": "2026-09-02",
"certification_date": "2026-09-02",
"status": "A"
},
"taxonomies": [
{
"code": "163W00000X",
"taxonomy_group": "",
"desc": "Registered Nurse",
"state": "KY",
"license": "4015045",
"primary": false
},
{
"code": "363L00000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner",
"state": "KY",
"license": "4015045",
"primary": false
},
{
"code": "363LG0600X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Gerontology",
"state": "KY",
"license": "4015045",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Louisville, KY
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 2, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.