Charmaine Diaz, MSN APRN FNP-BC

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

16726 Issued in CT

Practice address

425 Post Rd
Fairfield, CT 06824-6232

Phone

(203) 254-2021

Fax

(302) 254-2022

NPI assigned

May 12, 2026

Last updated

Jun 4, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CT

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, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Master of Science - Nursing

State licenses

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

• Hartford Healthcare Medical Group Specialists, PLLC

  • Surgery Physician
  • Hartford, CT
  • NPI 1023584216
  Medicare reassignment

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

{
    "created_epoch": "1778544000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780531200000",
    "number": "1306774021",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "425 POST RD",
            "city": "FAIRFIELD",
            "state": "CT",
            "postal_code": "068246232",
            "telephone_number": "203-254-2021",
            "fax_number": "302-254-2022"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "425 POST RD",
            "city": "FAIRFIELD",
            "state": "CT",
            "postal_code": "068246232",
            "telephone_number": "203-254-2021",
            "fax_number": "302-254-2022"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DIAZ",
        "first_name": "CHARMAINE",
        "credential": "MSN APRN FNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-05-12",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CT",
            "license": "16726",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Joshua Stiles Devin, RPH
• Sandhya Dhanjal, MD
• Anna Diamantis, LPC
• Diana Kral (Live Free Therapy LLC)
• Raquel Huruta Dias, MD
• Eugenia Diaz
• Terri C Dierkes, LMSW
• Ryan John Dillon, APRN
• Marleena Dimaggio, APRN
• Discovery Practice Management, Inc (Center For Discovery, Fairfield)

• Family Nurse Practitioner in Fairfield, CT
• Providers in Fairfield, CT by specialty
• Family Nurse Practitioner in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 2026; 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.