Matthew Carriero Johnson, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

70249 Issued in CT

Practice address

282 Washington St
Hartford, CT 06106-3322

Phone

(860) 545-9000

NPI assigned

Mar 22, 2018

Sex

Male

Sole proprietor

Yes

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 CT

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mjohnson571176@direct.ynhh.org

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.

• Connecticut Children'S Specialty Group, Inc.

  • Pediatrics Physician
  • Hartford, CT
  • NPI 1669448882
  Medicare reassignment NPD
• Natchaug Hospital, Inc.

  • Psychiatric Hospital
  • Mansfield Center, CT
  • NPI 1295811321
  Medicare reassignment NPD
• Connecticut Children'S Specialty Group, Inc.

  • Ophthalmology Physician
  • Glastonbury, CT
  • NPI 1568056984
  NPD

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

{
    "created_epoch": "1521676800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754179200000",
    "number": "1255835245",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "20 YORK ST",
            "city": "NEW HAVEN",
            "state": "CT",
            "postal_code": "065103220",
            "telephone_number": "203-688-4242"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "282 WASHINGTON ST",
            "city": "HARTFORD",
            "state": "CT",
            "postal_code": "061063322",
            "telephone_number": "860-545-9000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "30 Old Kings Hwy S",
            "address_purpose": "LOCATION",
            "city": "Darien",
            "state": "CT",
            "postal_code": "068204526",
            "country_code": "US",
            "telephone_number": "203-295-4340",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "JOHNSON",
        "first_name": "MATTHEW",
        "middle_name": "CARRIERO",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-03-22",
        "last_updated": "2025-08-03",
        "certification_date": "2025-08-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0804X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Child & Adolescent Psychiatry",
            "state": "CT",
            "license": "70249",
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "CT",
            "license": "70249",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kristina Hope Johnson, MD
• Lauren Natalia Johnson, PA-C
• Lori Johnson, APRN
• Maria Johnson, PA-C
• Maria Elena Johnson, M.D.
• Nicole Johnson
• Patricia C Johnson, CRNA
• Richard Johnson, MD
• Sandra Christine Johnson, M.D.
• Sarah Johnson, CRNA

• Psychiatry Physician in Hartford, CT
• Providers in Hartford, CT by specialty
• Psychiatry Physician in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 3, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.