Organization Active NPI

Susan N Grammatico DNP FNP LLC

  • Family Nurse Practitioner
  • New Milford, CT
National Provider Identifier
1538053400
Registry record updated Jun 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
Legal business name
SUSAN N GRAMMATICO DNP FNP LLC
Practice address
15 Old Park Lane Rd Ste 100
New Milford, CT 06776-2530
Phone
(860) 488-4863
Fax
(833) 974-4934
NPI assigned
Jun 5, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jun 5, 2025

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

Authorized official

Name
Susan N Grammatico, DNP, FNPNPI 1669528618
Title
Owner/Physician
Phone
(860) 488-4863

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse PractitionerGroup: 193400000X SINGLE SPECIALTY GROUP 363LF0000X Primary

Addresses

Primary practice location

15 Old Park Lane Rd Ste 100
New Milford, CT 06776-2530

Mailing address

15 Old Park Lane Rd Ste 100
New Milford, CT 06776-2530
Phone (860) 488-4863

Other names 1

  • Heartwood Doing business as

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20250819005034 CT Part B Supplier - Clinic/Group Practice 5991204547 Receives reassigned benefits from 1 practitioner
Practice locations: New Milford, CT

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
07D2329055Heartwood15 Old Park Lane, New Milford, CT 06776Certificate of waiverAug 20, 2027

National Provider Directory

National Provider Directory

Locations

15 Old Park Lane Rd
Ste 100
New Milford, CT 06776
Phone (860) 333-8697

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/15933/brand/1/csg/1/fhir/r4

Practitioners & affiliated clinicians

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1749081600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1749081600000",
    "number": "1538053400",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 OLD PARK LANE RD STE 100",
            "city": "NEW MILFORD",
            "state": "CT",
            "postal_code": "067762530",
            "telephone_number": "860-488-4863",
            "fax_number": "833-974-4934"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15 OLD PARK LANE RD STE 100",
            "city": "NEW MILFORD",
            "state": "CT",
            "postal_code": "067762530",
            "telephone_number": "860-488-4863",
            "fax_number": "833-974-4934"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SUSAN N GRAMMATICO DNP FNP LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-06-05",
        "last_updated": "2025-06-05",
        "certification_date": "2025-06-05",
        "status": "A",
        "authorized_official_last_name": "GRAMMATICO",
        "authorized_official_first_name": "SUSAN",
        "authorized_official_middle_name": "N",
        "authorized_official_title_or_position": "OWNER/PHYSICIAN",
        "authorized_official_telephone_number": "860-488-4863",
        "authorized_official_credential": "DNP, FNP"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Nurse Practitioner, Family",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Heartwood",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in New Milford, CT

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 5, 2025; 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.