Peter Richard Oconnor, PSY.D.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

3742 Issued in MA

Practice address

18 Silver Hill Rd
Acton, MA 01720-4228

Phone

(781) 646-2670

Fax

(781) 646-2670

NPI assigned

Jan 14, 2006

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

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in MA

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, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1137196800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761350400000",
    "number": "1184603334",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18 SILVER HILL RD",
            "city": "ACTON",
            "state": "MA",
            "postal_code": "017204228",
            "telephone_number": "781-646-2670"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18 SILVER HILL RD",
            "city": "ACTON",
            "state": "MA",
            "postal_code": "017204228",
            "telephone_number": "781-646-2670",
            "fax_number": "781-646-2670"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "226 Massachusetts Ave Ste 3",
            "address_purpose": "LOCATION",
            "city": "Arlington",
            "state": "MA",
            "postal_code": "024748449",
            "country_code": "US",
            "telephone_number": "781-646-2670",
            "fax_number": "781-646-2670",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OCONNOR",
        "first_name": "PETER",
        "middle_name": "RICHARD",
        "name_prefix": "Dr.",
        "credential": "PSY.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-01-14",
        "last_updated": "2025-10-25",
        "certification_date": "2025-10-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "MA",
            "license": "3742",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0515751",
            "state": "MA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "NPI",
            "identifier": "1184603334",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Katherine O'Brien, RD, LDN
• Kimber O'Connell, MA, BCBA, LABA
• Carolyn S O'Conor-Ferguson
• Carolyn O'Donnell-Walker, M.D.
• Julie Ann O'Hara, LICSW
• David Mitchell Ogrodnick, D.D.S., F.A.G.D.
• Elaine McGrane Olmstead, RN PMHCNS-BC
• Madelyn Omelchuck
• Online Ots LLC
• Linda Ann Onuska, MSW

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

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