Individual provider Active NPI

Sarah Masukewicz, RD, LDN, CNSC

  • Registered Dietitian
  • Boston, MA
National Provider Identifier
1114794773
Registry record updated Dec 5, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Registered DietitianTaxonomy code 133V00000X
Practice address
800 Washington St
Boston, MA 02111-1552
Phone
(617) 636-4505
NPI assigned
Dec 5, 2023
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 5, 2023

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Registered Dietitian 133V00000X Primary

Addresses

Primary practice location

800 Washington St
Boston, MA 02111-1552

Mailing address

282 Shawmut Ave Apt 7
Boston, MA 02118-2104

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260306002800 CA Practitioner - Registered Dietitian Or Nutrition Professional 0840641650 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Registered Dietitian Or Nutrition Professional
Education
Other, 2019
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

5665 Wilshire Blvd
Suite 1609
Los Angeles, CA 90036-3710

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

Practice roles

OrganizationSpecialtyStatusNew patients
Zaghi Medical Inc Dietitian, Registered CurrentSince Feb 1, 2026 Accepting new patients
Coord Health Inc. Dietitian, Registered PastSince Mar 30, 2025 Accepting new patients

Locations

5665 Wilshire Blvd
Los Angeles, CA 90036
Phone (209) 372-7025

350 Parnassus Ave
#700B
San Francisco, CA 94117
Phone (424) 600-8360

350 Parnassus Ave
Ste 700B
San Francisco, CA 94117
Phone (424) 600-8360

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 and National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1701734400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1701734400000",
    "number": "1114794773",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "282 SHAWMUT AVE APT 7",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021182104"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "800 WASHINGTON ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021111552",
            "telephone_number": "617-636-4505"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASUKEWICZ",
        "first_name": "SARAH",
        "credential": "RD, LDN, CNSC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-12-05",
        "last_updated": "2023-12-05",
        "certification_date": "2023-12-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "133V00000X",
            "taxonomy_group": "",
            "desc": "Dietitian, Registered",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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 Dec 5, 2023; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.