Active NPI
Marsha Hammer Duley, DNP-FNPC
- Family Nurse Practitioner
- Layton, UT
National Provider Identifier
1215708334
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Family Nurse Practitioner
- License
- 10350271-4405
- Practice address
- 438 Rosewood LN Apt 15
Layton, UT 84041-5706 - Phone
- (385) 348-5239
- Fax
- (385) 213-4614
- NPI assigned
- Jan 9, 2024
- 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 Nurse Practitioner | 363LF0000X | 10350271-4405 | UT | Primary |
Addresses
Primary practice location
438 Rosewood LN Apt 15
Layton, UT 84041-5706
Mailing address
438 Rosewood LN Apt 15
Layton, UT 84041-5706
Phone (503) 347-8203
Other names 1
- Marsha Hammer
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Jul 6, 2026 through Jul 6, 2028
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 10350271-4405 | UT | MD | Family Nurse Practitioner |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1704758400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757376000000",
"number": "1215708334",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "438 ROSEWOOD LN APT 15",
"city": "LAYTON",
"state": "UT",
"postal_code": "840415706",
"telephone_number": "503-347-8203"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "438 ROSEWOOD LN APT 15",
"city": "LAYTON",
"state": "UT",
"postal_code": "840415706",
"telephone_number": "385-348-5239",
"fax_number": "385-213-4614"
}
],
"practiceLocations": [],
"basic": {
"last_name": "DULEY",
"first_name": "MARSHA",
"middle_name": "HAMMER",
"credential": "DNP-FNPC",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2024-01-09",
"last_updated": "2025-09-09",
"certification_date": "2025-09-09",
"status": "A"
},
"taxonomies": [
{
"code": "363LF0000X",
"taxonomy_group": "",
"desc": "Nurse Practitioner, Family",
"state": "UT",
"license": "10350271-4405",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "MARSHA",
"last_name": "HAMMER",
"code": "1",
"type": "Former Name"
}
]
}Other providers in Layton, UT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.