Daniel O'Connor, PHARMD

Primary specialty

Emergency Medicine PharmacistTaxonomy code 1835E0208X

License

PH1000013 Issued in MA

Practice address

759 Chestnut St
Springfield, MA 01199-1001

Phone

(603) 745-2372

NPI assigned

Feb 28, 2026

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

Credentials

Doctor of Pharmacy

State licenses

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

{
    "created_epoch": "1772236800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773187200000",
    "number": "1255286845",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "177 THOMPSON ST",
            "city": "PALMER",
            "state": "MA",
            "postal_code": "010692226"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "759 CHESTNUT ST",
            "city": "SPRINGFIELD",
            "state": "MA",
            "postal_code": "011991001",
            "telephone_number": "603-745-2372"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'CONNOR",
        "first_name": "DANIEL",
        "credential": "PHARMD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2026-02-28",
        "last_updated": "2026-03-11",
        "certification_date": "2026-03-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1835E0208X",
            "taxonomy_group": "",
            "desc": "Pharmacist, Emergency Medicine",
            "state": "MA",
            "license": "PH1000013",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Patrick K O'Brien
• Patrick W. O'Brien, PA-C
• O'Connell Professional Nurse Service Inc.
• Christopher William O'Connell
• Christine Ann O'Connor, R.N.
• Julia Rose O'Connor, PA
• Kathleen Anne O'Connor, MA
• Kerri Ann O'Connor, MS/P
• Laura M. O'Connor
• Michael J. O'Connor, DC

• Emergency Medicine Pharmacist in Springfield, MA
• Providers in Springfield, MA by specialty
• Emergency Medicine Pharmacist in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 11, 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.