Margaret Rose O'Callaghan, NURSE PRACTITIONER

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

209032753 Issued in IL

Practice address

120 W 111TH St
Chicago, IL 60628-4215

Phone

(773) 768-5000

NPI assigned

Jul 29, 2025

Sex

Female

Sole proprietor

No

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

Eligible to order & refer

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

Green means eligible to order or refer.

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Interoperability endpoints

• Direct secure messaging: margaret.o.callaghan.1@18277.direct.athenahealth.com

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

{
    "created_epoch": "1753747200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753747200000",
    "number": "1184507014",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8943 S 84TH AVE",
            "city": "HICKORY HILLS",
            "state": "IL",
            "postal_code": "604571305",
            "telephone_number": "708-822-5393"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "120 W 111TH ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606284215",
            "telephone_number": "773-768-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'CALLAGHAN",
        "first_name": "MARGARET",
        "middle_name": "ROSE",
        "name_prefix": "Mrs.",
        "credential": "NURSE PRACTITIONER",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-29",
        "last_updated": "2025-07-29",
        "certification_date": "2025-07-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IL",
            "license": "209032753",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Savannah O'Brien
• Stephanie Ellen O'Brien, CPNP
• Stephanie Mae O'Brien, FNP-C
• Teresa M O'Brien, NP-C
• Timothy J O'Brien, PSYD
• Allison O'Connell
• Bridgid O'Connell, LCSW
• David O'Connell, MD
• Jennifer O'Connell, LCSW
• Jessica Stowe O'Connell, M.D.

• Family Nurse Practitioner in Chicago, IL
• Providers in Chicago, IL by specialty
• Family Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 29, 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.