Active NPI
Margarita Sierra, MBA, RDN
- Registered Dietitian
- Mine Hill, NJ
National Provider Identifier
1700077955
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- 877964
- Practice address
- 389 E Randolph Ave
Mine Hill, NJ 07803-3070 - Phone
- (862) 707-8404
- Fax
- (973) 328-1432
- NPI assigned
- Aug 5, 2007
- 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 |
|---|---|---|---|---|
| Registered Dietitian | 133V00000X | 877964 | NJ | Primary |
Addresses
Primary practice location
389 E Randolph Ave
Mine Hill, NJ 07803-3070
Mailing address
389 E Randolph Ave
Mine Hill, NJ 07803-3070
Phone (973) 454-6770
Other practice location 1
330 Changebridge Rd Ste 101
Pine Brook, NJ 07058-9839
Phone (862) 972-9200
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
- Credentials
- Master of Business Administration
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 877964 | NJ | MD | Registered Dietitian |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Inutrition Health LLC | Dietitian, Registered | Current | Accepting new patients |
| Fay Nutrition | Dietitian, Registered | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1186272000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774483200000",
"number": "1700077955",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "389 E RANDOLPH AVE",
"city": "MINE HILL",
"state": "NJ",
"postal_code": "078033070",
"telephone_number": "973-454-6770",
"fax_number": "973-328-1432"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "389 E RANDOLPH AVE",
"city": "MINE HILL",
"state": "NJ",
"postal_code": "078033070",
"telephone_number": "862-707-8404",
"fax_number": "973-328-1432"
}
],
"practiceLocations": [
{
"address_1": "330 Changebridge Rd Ste 101",
"address_purpose": "LOCATION",
"city": "Pine Brook",
"state": "NJ",
"postal_code": "070589839",
"country_code": "US",
"telephone_number": "862-972-9200",
"fax_number": "973-328-1432",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "SIERRA",
"first_name": "MARGARITA",
"name_prefix": "Ms.",
"credential": "MBA, RDN",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2007-08-05",
"last_updated": "2026-03-26",
"certification_date": "2026-03-26",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": "NJ",
"license": "877964",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Mine Hill, NJ
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 26, 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.