Individual provider Active NPI

Madeleine Bartzak, RN, MPH

  • Infection Control Registered Nurse
  • Natick, MA
National Provider Identifier
1366303299
Registry record updated Nov 20, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Infection Control Registered NurseTaxonomy code 163WI0600X
License
2286223 Issued in MA
Practice address
21 Grant St
Natick, MA 01760-4701
Phone
(508) 308-5911
NPI assigned
Nov 20, 2025
Last updated
Nov 20, 2025By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 20, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Infection Control Registered Nurse 163WI0600X 2286223 MA Primary

Addresses

Primary practice location

21 Grant St
Natick, MA 01760-4701

Mailing address

21 Grant St
Natick, MA 01760-4701
Phone (508) 308-5911

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
Registered Nurse

State licenses

LicenseStateTypeSpecialty
2286223MAMDInfection Control Registered Nurse

NPI Registry JSON

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

{
    "created_epoch": "1763596800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1366303299",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21 GRANT ST",
            "city": "NATICK",
            "state": "MA",
            "postal_code": "017604701",
            "telephone_number": "508-308-5911"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21 GRANT ST",
            "city": "NATICK",
            "state": "MA",
            "postal_code": "017604701",
            "telephone_number": "508-308-5911"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BARTZAK",
        "first_name": "MADELEINE",
        "credential": "RN, MPH",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-11-20",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163WI0600X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Infection Control",
            "state": "MA",
            "license": "2286223",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Natick, MA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.