Alexandra Haley Mackenzie, APRN, PMHNP-BC

Primary specialty

Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X

License

APRN04583 Issued in RI

Practice address

1443 Hartford Ave
Johnston, RI 02919-3224

Phone

(401) 273-8100

NPI assigned

Aug 29, 2024

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in RI

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Gateway Healthcare IncGroup PAC ID 7719874908, 66 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

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.

• Gateway Healthcare Inc

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Pawtucket, RI
  • NPI 1821078932
  Medicare reassignment Care Compare group NPD
• Metta Psychiatry & Wellness, LLC

  • Psychiatric/Mental Health Nurse Practitioner
  • Riverside, RI
  • NPI 1003773680
  NPD Authorized official

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

{
    "created_epoch": "1724889600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765238400000",
    "number": "1164256376",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15 LA SALLE SQ",
            "city": "PROVIDENCE",
            "state": "RI",
            "postal_code": "029031814",
            "telephone_number": "401-444-6779",
            "fax_number": "401-444-6912"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1443 HARTFORD AVE",
            "city": "JOHNSTON",
            "state": "RI",
            "postal_code": "029193224",
            "telephone_number": "401-273-8100"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1445 Wampanoag Trl Unit 202",
            "address_purpose": "LOCATION",
            "city": "Riverside",
            "state": "RI",
            "postal_code": "029151019",
            "country_code": "US",
            "telephone_number": "401-437-4116",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MACKENZIE",
        "first_name": "ALEXANDRA",
        "middle_name": "HALEY",
        "credential": "APRN, PMHNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-08-29",
        "last_updated": "2025-12-09",
        "certification_date": "2025-12-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "RI",
            "license": "APRN04583",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "RI",
            "license": "RN62588",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Krystal Nicole Machado, PSYD
• Veronica Machado
• Marykate Machardy
• Susan J Maciag, R.PH.
• David Mackall, LCSW
• Maddy'S Med-Clinics LLC
• Maddys Medical LLC
• Cynthia Antoinette Mahoney, RN
• Madison Lynn Mailloux, PT, DPT
• Majors Medical Supply

• Psychiatric/Mental Health Nurse Practitioner in Johnston, RI
• Providers in Johnston, RI by specialty
• Psychiatric/Mental Health Nurse Practitioner in Rhode Island

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.