Michael B O'Neill, MD

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

MA029820 Issued in NJ

Practice address

328 Sparta Ave
Sparta, NJ 07871

Phone

(973) 729-2197

Fax

(973) 729-5653

NPI assigned

Apr 28, 2006

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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1146182400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1477510782",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "328 SPARTA AVE",
            "city": "SPARTA",
            "state": "NJ",
            "postal_code": "07871",
            "telephone_number": "973-729-2197",
            "fax_number": "973-729-5653"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "328 SPARTA AVE",
            "city": "SPARTA",
            "state": "NJ",
            "postal_code": "07871",
            "telephone_number": "973-729-2197",
            "fax_number": "973-729-5653"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'NEILL",
        "first_name": "MICHAEL",
        "middle_name": "B",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "NJ",
            "license": "MA029820",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "PA",
            "license": "MD044367L",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1237209",
            "state": "NJ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Pediatrics Physician in Sparta, NJ
• Providers in Sparta, NJ by specialty
• Pediatrics Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; 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.