NPIMap

Individual provider Active NPI

Siena Catherine Nguyen, MSN, FNP-C, BSN, RN

  • Family Nurse Practitioner
  • Boston, MA
National Provider Identifier
1447733498
Registry record updated May 24, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
F07181031 Issued in MA
Practice address
55 Fruit St
Boston, MA 02114-2621
Phone
(617) 726-2000
NPI assigned
Sep 14, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 24, 2023

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X F07181031 MA Primary

Addresses

Primary practice location

55 Fruit St
Boston, MA 02114-2621

Mailing address

55 Fruit St
Boston, MA 02114-2621

Other practice location 1

20 Bradston St
Boston, MA 02118-2705
Phone (617) 635-1000

Other names 1

  • Siena Terenzio Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20181218000503 MA Practitioner - Nurse Practitioner 7214272376 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Massachusetts General Physicians Organization IncGroup PAC ID 2466365820, 3,494 clinicians

Practice addresses (Care Compare)

55 Fruit St
Boston, MA 02114-2696
Phone (617) 724-0287

Hospital & facility affiliations

  • Massachusetts General Hospital Hospital, Boston, MA, CCN 220071
  • North Shore Medical Center - Hospital, Salem, MA, CCN 220035
  • Brigham and Women'S Hospital Hospital, Boston, MA, CCN 220110
  • Spaulding Rehabilitation Hospital Inpatient rehabilitation facility, Charlestown, MA, CCN 223034

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Bachelor on Science - Nursing, Master of Science - Nursing, Registered Nurse

State licenses

LicenseStateTypeSpecialty
F07181031MAMDFamily Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
The General Hospital Corporation CurrentSince Nov 22, 2021 Accepting new patients
General Hospital Corp Current Accepting new patients
Golden Insight Inc CurrentSince Apr 25, 2021 Accepting new patients
Massachusetts General Physicians Organization Inc CurrentSince Nov 22, 2021 Accepting new patients
The Commonwealth of Massachusetts PastSince Aug 17, 2025 Accepting new patients

Locations

55 Fruit St
Boston, MA 02114

55 Fruit St
#2
Boston, MA 02114
Phone (617) 726-2967

105 Webster St
Ste 8
Hanover, MA 02339
Phone (781) 312-7457

Interoperability endpoints

  • Direct secure messaging: terenzio.siena.mgh@direct.partners.masshiway.net

Organizations & group practices 8

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 4

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1536883200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1684886400000",
    "number": "1447733498",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621",
            "telephone_number": "617-726-2000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "20 Bradston St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021182705",
            "country_code": "US",
            "telephone_number": "617-635-1000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NGUYEN",
        "first_name": "SIENA",
        "middle_name": "CATHERINE",
        "credential": "MSN, FNP-C, BSN, RN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-09-14",
        "last_updated": "2023-05-24",
        "certification_date": "2023-05-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MA",
            "license": "F07181031",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SIENA",
            "last_name": "TERENZIO",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.