Active NPI
Cassandra Gertjejansen
- Family Medicine Physician
- Marquette, MI
National Provider Identifier
1457294126
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Medicine Physician
- License
- 5151017905
- Practice address
- 1414 W Fair Ave Ste 36
Marquette, MI 49855-2675 - Phone
- (906) 449-1010
- NPI assigned
- Apr 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 |
|---|---|---|---|---|
| Family Medicine Physician | 207Q00000X | 5151017905 | MI | Primary |
Addresses
Primary practice location
1414 W Fair Ave Ste 36
Marquette, MI 49855-2675
Mailing address
1414 W Fair Ave Ste 36
Marquette, MI 49855-2675
Phone (906) 449-1010
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MI
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20260606000107 | MI | Order and Referring Only - Family Practice | 2769953165 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 5151017905 | MI | MD | Family Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1775692800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1775692800000",
"number": "1457294126",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1414 W FAIR AVE STE 36",
"city": "MARQUETTE",
"state": "MI",
"postal_code": "498552675",
"telephone_number": "906-449-1010"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1414 W FAIR AVE STE 36",
"city": "MARQUETTE",
"state": "MI",
"postal_code": "498552675",
"telephone_number": "906-449-1010"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GERTJEJANSEN",
"first_name": "CASSANDRA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2026-04-09",
"last_updated": "2026-04-09",
"certification_date": "2026-04-09",
"status": "A"
},
"taxonomies": [
{
"code": "207Q00000X",
"taxonomy_group": "",
"desc": "Family Medicine",
"state": "MI",
"license": "5151017905",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Marquette, MI
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 9, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.