Michael David O'Brien

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

PSY10001410 Issued in MA

Practice address

729 Boylston St
Boston, MA 02116-2639

Phone

(617) 286-4945

NPI assigned

Jan 10, 2018

Sex

Male

Sole proprietor

Yes

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1515542400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749772800000",
    "number": "1790293827",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "729 BOYLSTON ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021162639"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "729 BOYLSTON ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021162639",
            "telephone_number": "617-286-4945"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "MICHAEL",
        "middle_name": "DAVID",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-01-10",
        "last_updated": "2025-06-13",
        "certification_date": "2025-06-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "MA",
            "license": "PSY10001410",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kerrilynn O'Brien
• Kerry L. O'Brien, M.D.
• Laura Beth O'Brien, SC.D.
• Lauren Ferraro O'Brien, MS, RD, LDN
• Martha E O'Brien, CRNA
• Michael J O'Brien, MD
• Michael J O'Brien, M.D.
• Monica S O'Brien, MD
• Patricia O'Brien, RR, CPNP-AC
• Rachel O'Brien

• Clinical Psychologist in Boston, MA
• Providers in Boston, MA by specialty
• Clinical Psychologist in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 13, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.