James E. O'Brien Jr., M.D.

Primary specialty

Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X

License

2001013807 Issued in MO

Practice address

2401 Gillham Rd
Kansas City, MO 64108-4619

Phone

(816) 234-3000

Fax

(816) 302-9939

NPI assigned

May 6, 2006

Last updated

Nov 25, 2025By the provider in NPPES

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

Enrolled in MO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• The Children's Mercy Hospital

  • Pediatrics Physician
  • Kansas City, MO
  • NPI 1851437719
  Medicare reassignment NPD
• The Children's Mercy Hospital

  dba Children's Mercy Riverside Pharmacy - Mail

  • Mail Order Pharmacy
  • Riverside, MO
  • NPI 1235923194
  NPD
• The Children's Mercy Hospital

  • Children's Hospital
  • Overland Park, KS
  • NPI 1154400232
  NPD (past)

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

{
    "created_epoch": "1146873600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764028800000",
    "number": "1528017746",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2401 GILLHAM RD",
            "city": "KANSAS CITY",
            "state": "MO",
            "postal_code": "641084619",
            "telephone_number": "816-234-3580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2401 GILLHAM RD",
            "city": "KANSAS CITY",
            "state": "MO",
            "postal_code": "641084619",
            "telephone_number": "816-234-3000",
            "fax_number": "816-302-9939"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "JAMES",
        "middle_name": "E.",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-06",
        "last_updated": "2025-11-25",
        "certification_date": "2025-11-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "MO",
            "license": "2001013807",
            "primary": true
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "KS",
            "license": "0436344",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "205353402",
            "state": "MO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Masha Catherine Nzabi, M.D.
• Devon O'Brien
• Emily Jane O'Brien
• Gwen O'Brien, LCSW
• James Dominic O'Brien, M.D.
• Joseph Daniel O'Brien, MD
• Mary Kathleen O'Brien, DPT
• Tobie O'Brien, R.N., C.P.N.P.
• Stacey O'Bryan, MD
• Sara Catherine O'Connell, LMSW

• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Kansas City, MO
• Providers in Kansas City, MO by specialty
• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.