James Brien O'Callaghan, PH.D.

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

000101 Issued in CT

Practice address

4 Main St
New Milford, CT 06776-2802

Phone

(203) 740-2595

Fax

(203) 740-2287

NPI assigned

Apr 3, 2007

Last updated

Mar 25, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Other names 1

• Dr. J Brien O'Callaghan Professional name

Medicare fee-for-service enrollment

Enrolled in CT

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 1980

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Psychotherapy Associates of Western ConnecticutGroup PAC ID 9234314790, 3 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Psychotherapy Associates of Western Connecticut

  • Marriage & Family Therapist
  • New Milford, CT
  • NPI 1881895670
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1175558400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774396800000",
    "number": "1689796690",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "54 PLUMTREES RD",
            "city": "BETHEL",
            "state": "CT",
            "postal_code": "068011645",
            "telephone_number": "203-743-1633",
            "fax_number": "203-791-8300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4 MAIN ST",
            "city": "NEW MILFORD",
            "state": "CT",
            "postal_code": "067762802",
            "telephone_number": "203-740-2595",
            "fax_number": "203-740-2287"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'CALLAGHAN",
        "first_name": "JAMES",
        "middle_name": "BRIEN",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-03",
        "last_updated": "2026-03-25",
        "certification_date": "2026-03-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CT",
            "license": "000930",
            "primary": false
        },
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CT",
            "license": "000101",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "004074050",
            "state": "CT"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "J",
            "last_name": "O'CALLAGHAN",
            "middle_name": "BRIEN",
            "prefix": "DR.",
            "credential": "PH.D.",
            "code": "2",
            "type": "Professional Name"
        }
    ]
}

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• Marriage & Family Therapist in New Milford, CT
• Providers in New Milford, CT by specialty
• Marriage & Family Therapist in Connecticut

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 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.