Kathryn O'Brien, D.O.

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

OS022159 Issued in PA

Practice address

200 Lothrop St
Pittsburgh, PA 15213-2536

Phone

(412) 802-3043

NPI assigned

Feb 28, 2018

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

Enrolled in MA

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 Osteopathy

State licenses

Interoperability endpoints

• Direct secure messaging: kathryn.c.obrien@upmcdirect.com

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

{
    "created_epoch": "1519776000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783468800000",
    "number": "1235630856",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3600 FORBES AVE",
            "city": "PITTSBURGH",
            "state": "PA",
            "postal_code": "152133410"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 LOTHROP ST",
            "city": "PITTSBURGH",
            "state": "PA",
            "postal_code": "152132536",
            "telephone_number": "412-802-3043"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4401 Penn Ave",
            "address_purpose": "LOCATION",
            "city": "Pittsburgh",
            "state": "PA",
            "postal_code": "152241342",
            "country_code": "US",
            "telephone_number": "412-692-5183",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "KATHRYN",
        "credential": "D.O.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-02-28",
        "last_updated": "2026-07-08",
        "certification_date": "2026-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "PA",
            "license": "OS022159",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Linda Anne O Malley-Dafner, RN
• Louise Mathews O'Boyle, M.A.
• Beth A O'Brien
• Casey O'Brien, PHARMD
• Eleni O'Brien, MA,LPC, NCC
• Kelsey N. O'Brien, CSCD, MOT, OTR/L
• Mary O'Brien
• Matthew Grayson O'Brien, PA-C
• Maureen Judith O'Brien, MS, CCC-SLP
• Michael Emmet O'Brien

• Nephrology Physician in Pittsburgh, PA
• Providers in Pittsburgh, PA by specialty
• Nephrology Physician in Pennsylvania

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 8, 2026; 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.