Active NPI
Alexzander Colt Estep-Kolander, REGISTERED NURSE
- Maternal & Fetal Medicine Physician
- Louisville, KY
National Provider Identifier
1184587958
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Maternal & Fetal Medicine Physician
- License
- PL018725
- Practice address
- 530 South Jackson St
Center for Women and Infants
Louisville, KY 40202 - Phone
- (502) 588-4400
- NPI assigned
- Dec 8, 2025
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Critical Care Medicine Clinical Nurse Specialist | 364SC0200X | 14091279-1723 | UT | |
| Maternal & Fetal Medicine Physician | 207VM0101X | PL018725 | KY | Primary |
| Pharmacy Technician | 183700000X | 72490 |
Addresses
Primary practice location
530 South Jackson St
Center for Women and Infants
Louisville, KY 40202
Mailing address
530 South Jackson St
Center for Women and Infants
Louisville, KY 40202
Phone (502) 588-4400
Other practice location 1
600 Grant St
Pittsburgh, PA 15219-2702
Phone (412) 692-6677
Other practice location 2
10137 Ocean Highway US 17 S
Pawleys Island, SC 29585
Phone (843) 237-4036
Other practice location 3
18591 N 59th Ave
Glendale, AZ 85308-1251
Phone (602) 789-1166
Other practice location 4
103 Hospital Drive
Saskatoon, Saskatchewan S7N 0W8
CA
Other practice location 5
28 Oki Dr NW
Calgary, Alberta T3B 6A8
CA
Other practice location 6
1200 E 3900 S
Salt Lake City, UT 84124-1300
Phone (801) 268-7111
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 34914159 | Other | PA | PENNSYLVANIA NURSING REGISTRATION |
Other names 1
- Alexzander Colt Estep
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 |
|---|---|---|---|
| 14091279-1723 | UT | MD | Critical Care Medicine Clinical Nurse Specialist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1765152000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1787616000000",
"number": "1184587958",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "530 SOUTH JACKSON ST",
"address_2": "CENTER FOR WOMEN AND INFANTS",
"city": "LOUISVILLE",
"state": "KY",
"postal_code": "40202",
"telephone_number": "502-588-4400"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "530 SOUTH JACKSON ST",
"address_2": "CENTER FOR WOMEN AND INFANTS",
"city": "LOUISVILLE",
"state": "KY",
"postal_code": "40202",
"telephone_number": "502-588-4400"
}
],
"practiceLocations": [
{
"address_1": "600 Grant St",
"address_purpose": "LOCATION",
"city": "Pittsburgh",
"state": "PA",
"postal_code": "152192702",
"country_code": "US",
"telephone_number": "412-692-6677",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "10137 Ocean Highway US 17 S",
"address_purpose": "LOCATION",
"city": "Pawleys Island",
"state": "SC",
"postal_code": "29585",
"country_code": "US",
"telephone_number": "843-237-4036",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "18591 N 59th Ave",
"address_purpose": "LOCATION",
"city": "Glendale",
"state": "AZ",
"postal_code": "853081251",
"country_code": "US",
"telephone_number": "602-789-1166",
"country_name": "United States",
"address_type": "DOM"
},
{
"address_1": "103 Hospital Drive",
"address_purpose": "LOCATION",
"city": "Saskatoon",
"state": "Saskatchewan",
"postal_code": "S7N 0W8",
"country_code": "CA",
"country_name": "Canada",
"address_type": "FGN"
},
{
"address_1": "28 Oki Dr NW",
"address_purpose": "LOCATION",
"city": "Calgary",
"state": "Alberta",
"postal_code": "T3B 6A8",
"country_code": "CA",
"country_name": "Canada",
"address_type": "FGN"
},
{
"address_1": "1200 E 3900 S",
"address_purpose": "LOCATION",
"city": "Salt Lake City",
"state": "UT",
"postal_code": "841241300",
"country_code": "US",
"telephone_number": "801-268-7111",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "ESTEP-KOLANDER",
"first_name": "ALEXZANDER",
"middle_name": "COLT",
"credential": "REGISTERED NURSE",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2025-12-08",
"last_updated": "2026-08-25",
"certification_date": "2026-08-25",
"status": "A"
},
"taxonomies": [
{
"code": "364SC0200X",
"taxonomy_group": "",
"desc": "Clinical Nurse Specialist, Critical Care Medicine",
"state": "UT",
"license": "14091279-1723",
"primary": false
},
{
"code": "207VM0101X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology, Maternal & Fetal Medicine",
"state": "KY",
"license": "PL018725",
"primary": true
},
{
"code": "183700000X",
"taxonomy_group": "",
"desc": "Pharmacy Technician",
"state": null,
"license": "72490",
"primary": false
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "PENNSYLVANIA NURSING REGISTRATION",
"identifier": "34914159",
"state": "PA"
}
],
"endpoints": [],
"other_names": [
{
"first_name": "ALEXZANDER",
"last_name": "ESTEP",
"middle_name": "COLT",
"credential": "LVN",
"code": "1",
"type": "Former Name"
}
]
}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 Aug 25, 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.