Active NPI
Hayley Elizabeth Marcinkowski
- Critical Care Medicine (Internal Medicine) Physician
- Pontiac, MI
National Provider Identifier
1003773052
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Critical Care Medicine (Internal Medicine) Physician
- License
- 4704338852
- Practice address
- 44405 Woodward Ave
Pontiac, MI 48341-5023 - Phone
- (248) 858-3000
- NPI assigned
- Jan 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 |
|---|---|---|---|---|
| Critical Care Medicine (Internal Medicine) Physician | 207RC0200X | 4704338852 | MI | Primary |
Addresses
Primary practice location
44405 Woodward Ave
Pontiac, MI 48341-5023
Mailing address
44405 Woodward Ave
Pontiac, MI 48341-5023
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 |
|---|---|---|---|
| 4704338852 | MI | MD | Critical Care Medicine (Internal Medicine) Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1767916800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1767916800000",
"number": "1003773052",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "44405 WOODWARD AVE",
"city": "PONTIAC",
"state": "MI",
"postal_code": "483415023"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "44405 WOODWARD AVE",
"city": "PONTIAC",
"state": "MI",
"postal_code": "483415023",
"telephone_number": "248-858-3000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MARCINKOWSKI",
"first_name": "HAYLEY",
"middle_name": "ELIZABETH",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-01-09",
"last_updated": "2026-01-09",
"certification_date": "2026-01-06",
"status": "A"
},
"taxonomies": [
{
"code": "207RC0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Critical Care Medicine",
"state": "MI",
"license": "4704338852",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Pontiac, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 9, 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.