NPIMap

Individual provider Active NPI

Matthew Brennan O'Brien, M.D.

  • Diagnostic Radiology Physician
  • Portland, OR
National Provider Identifier
1417210998
Registry record updated Mar 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
MD204156 Issued in OR
Practice address
3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011
Phone
(503) 418-0990
Fax
(503) 494-4982
NPI assigned
Jun 20, 2012
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 20, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X 270757 MA
Diagnostic Radiology Physician 2085R0202X MD204156 OR Primary

Addresses

Primary practice location

3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011

Mailing address

3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011
Phone (503) 418-0990

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210623001179 OR Practitioner - Diagnostic Radiology 8729211438 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
Wayne State University School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University Professional ServicesGroup PAC ID 4880760107, 1,683 clinicians

Practice addresses (Care Compare)

51377 SW Old Portland Rd
Scappoose, OR 97056-4023
Phone (503) 418-4222

Hospital & facility affiliations

  • Ohsu Hospital and Clinics Hospital, Portland, OR, CCN 380009
  • Adventist Health Portland Hospital, Portland, OR, CCN 380060
  • Providence St Vincent Medical Center Hospital, Portland, OR, CCN 380004
  • Mid-Columbia Medical Center Hospital, The Dalles, OR, CCN 380001
  • Legacy Good Samaritan Medical Center Hospital, Portland, OR, CCN 380017

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
University Professional Services Current Accepting new patients
Ohsu Outpatient Clinical Services LLC CurrentSince Nov 22, 2024 Accepting new patients
University Professional Services CurrentSince Jun 17, 2021 Accepting new patients
University Professional Services CurrentSince Jun 17, 2021 Accepting new patients

Locations

15700 SW Greystone Ct
Beaverton, OR 97006
Phone (503) 203-1000

1501 NE Medical Center Dr
Bend, OR 97701
Phone (541) 317-4354

3181 SW Sam Jackson Park Rd
Portland, OR 97239
Phone (503) 494-5674

51377 SW Old Portland Rd
Scappoose, OR 97056
Phone (503) 418-4222

1615 Delaware St
Longview, WA 98632
Phone (360) 363-4818

Interoperability endpoints

  • Direct secure messaging: mobrien134235@direct.ohsu.edu

Organizations & group practices 4

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

Hospital & facility affiliations 6

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1340150400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773964800000",
    "number": "1417210998",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3181 SW SAM JACKSON PARK RD",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972393011",
            "telephone_number": "503-418-0990",
            "fax_number": "503-494-4982"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3181 SW SAM JACKSON PARK RD",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972393011",
            "telephone_number": "503-418-0990",
            "fax_number": "503-494-4982"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'BRIEN",
        "first_name": "MATTHEW",
        "middle_name": "BRENNAN",
        "name_prefix": "Mr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-20",
        "last_updated": "2026-03-20",
        "certification_date": "2026-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MA",
            "license": "270757",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "OR",
            "license": "MD204156",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.