Active NPI
Reilly Mackenna Niesz, MA, TLLP
- Clinical Psychologist
- Livonia, MI
National Provider Identifier
1437067428
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 6362010423
- Practice address
- 29550 Five Mile Rd
Livonia, MI 48154-3710 - Phone
- (800) 395-3223
- NPI assigned
- Aug 31, 2026
- 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 |
|---|---|---|---|---|
| Clinical Psychologist | 103TC0700X | 6362010423 | MI | Primary |
Addresses
Primary practice location
29550 Five Mile Rd
Livonia, MI 48154-3710
Mailing address
26545 American Dr
Southfield, MI 48034-6115
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": "1788134400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1788912000000",
"number": "1437067428",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "26545 AMERICAN DR",
"city": "SOUTHFIELD",
"state": "MI",
"postal_code": "480346115"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "29550 FIVE MILE RD",
"city": "LIVONIA",
"state": "MI",
"postal_code": "481543710",
"telephone_number": "800-395-3223"
}
],
"practiceLocations": [],
"basic": {
"last_name": "NIESZ",
"first_name": "REILLY",
"middle_name": "MACKENNA",
"credential": "MA, TLLP",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2026-08-31",
"last_updated": "2026-09-09",
"certification_date": "2026-09-09",
"status": "A"
},
"taxonomies": [
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "MI",
"license": "6362010423",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Livonia, MI
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.