Active NPI
Marta E Banuelos, MS, CNS
- Registered Dietitian
- Boston, MA
National Provider Identifier
1619633195
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Registered Dietitian
- License
- 19289
- Practice address
- 504 Beacon St Ste 1
Boston, MA 02115-1042 - Phone
- (415) 999-8393
- NPI assigned
- Nov 9, 2021
- 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 | 19289 | MA | Primary |
Addresses
Primary practice location
504 Beacon St Ste 1
Boston, MA 02115-1042
Mailing address
504 Beacon St Ste 1
Boston, MA 02115-1042
Phone (617) 615-9198
Other names 1
- Marta E Oltarzewski
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 Science
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1636416000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1782950400000",
"number": "1619633195",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "504 BEACON ST STE 1",
"city": "BOSTON",
"state": "MA",
"postal_code": "021151042",
"telephone_number": "617-615-9198",
"fax_number": "617-616-0936"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "504 BEACON ST STE 1",
"city": "BOSTON",
"state": "MA",
"postal_code": "021151042",
"telephone_number": "415-999-8393"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BANUELOS",
"first_name": "MARTA",
"middle_name": "E",
"credential": "MS, CNS",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2021-11-09",
"last_updated": "2026-07-02",
"certification_date": "2026-07-02",
"status": "A"
},
"taxonomies": [
{
"code": "133V00000X",
"taxonomy_group": "",
"desc": "Dietitian, Registered",
"state": "MA",
"license": "19289",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "MARTA",
"last_name": "OLTARZEWSKI",
"middle_name": "E",
"credential": "MS, CNS",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Boston, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 2, 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.