Individual provider Active NPI

Diana M Seaders, PA

  • Medical Physician Assistant
  • Salem, OR
National Provider Identifier
1285979138
Registry record updated Dec 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
PA164959 Issued in OR
Practice address
875 Oak St SE Ste 4030
Salem, OR 97301-3984
Phone
(503) 561-6444
Fax
(503) 561-6440
NPI assigned
Dec 4, 2012
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 10, 2025

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 5318 AZ
Medical Physician Assistant 363AM0700X PA164959 OR Primary
Physician Assistant 363A00000X PA164969 OR

Addresses

Primary practice location

875 Oak St SE Ste 4030
Salem, OR 97301-3984

Mailing address

875 Oak St SE Ste 4030
Salem, OR 97301-3984
Phone (503) 561-6444

Other practice location 1

3783 International Ct Ste 200
Springfield, OR 97477-1025
Phone (541) 302-6469

Other practice location 2

501 NW Elks Dr Ste 100
Corvallis, OR 97330-3757
Phone (541) 768-4950

Other practice location 3

3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011
Phone (503) 494-6594

Other identifiers 1

IdentifierTypeStateIssuer
767954MedicaidAZ

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address dseaderscontractstaff197038@samhealth.direct-ci.com

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR
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.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20131204002289 OR Practitioner - Physician Assistant 1254585441 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Oregon Oncology Specialists LLPGroup PAC ID 3971576240, 41 clinicians
University Professional ServicesGroup PAC ID 4880760107, 1,683 clinicians

Practice addresses (Care Compare)

1475 Mount Hood Ave
Woodburn, OR 97071-9066
Phone (971) 983-5210

3181 SW Sam Jackson Park Rd
Portland, OR 97239-3011
Phone (503) 494-8311

875 Oak St SE
Suite 4030
Salem, OR 97301-3984
Phone (503) 561-6444

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
5318AZMDPhysician Assistant
PA164969ORMDPhysician Assistant
PA164959ORMDMedical Physician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
University Professional Services CurrentSince Dec 1, 2025 Accepting new patients
Oregon Oncology Specialists, LLP CurrentSince Jan 15, 2018 Accepting new patients
University Professional Services CurrentSince Dec 1, 2025 Accepting new patients
Oregon Oncology Specialists, LLP Past Accepting new patients
Good Samaritan Hospital Corvallis Past Accepting new patients
University Professional Services Past Accepting new patients

Locations

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

2700 SE Stratus Ave
Ste A
McMinnville, OR 97128
Phone (503) 435-6590

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

3303 S Bond Ave
Portland, OR 97239
Phone (503) 494-3151

875 Oak St SE
Ste 4030
Salem, OR 97301

404 Welch St
Silverton, OR 97381

1475 Mount Hood Ave
Woodburn, OR 97071
Phone (503) 982-2174

Interoperability endpoints

  • Direct secure messaging: diana.seaders.1@17725.direct.athenahealth.com

Organizations & group practices 8

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 3

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": "1354579200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765324800000",
    "number": "1285979138",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "875 OAK ST SE STE 4030",
            "city": "SALEM",
            "state": "OR",
            "postal_code": "973013984",
            "telephone_number": "503-561-6444",
            "fax_number": "503-561-6440"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "875 OAK ST SE STE 4030",
            "city": "SALEM",
            "state": "OR",
            "postal_code": "973013984",
            "telephone_number": "503-561-6444",
            "fax_number": "503-561-6440"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3783 International Ct Ste 200",
            "address_purpose": "LOCATION",
            "city": "Springfield",
            "state": "OR",
            "postal_code": "974771025",
            "country_code": "US",
            "telephone_number": "541-302-6469",
            "fax_number": "541-302-6473",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "501 NW Elks Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "Corvallis",
            "state": "OR",
            "postal_code": "973303757",
            "country_code": "US",
            "telephone_number": "541-768-4950",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3181 SW Sam Jackson Park Rd",
            "address_purpose": "LOCATION",
            "city": "Portland",
            "state": "OR",
            "postal_code": "972393011",
            "country_code": "US",
            "telephone_number": "503-494-6594",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SEADERS",
        "first_name": "DIANA",
        "middle_name": "M",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2012-12-04",
        "last_updated": "2025-12-10",
        "certification_date": "2025-12-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "AZ",
            "license": "5318",
            "primary": false
        },
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "OR",
            "license": "PA164959",
            "primary": true
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "OR",
            "license": "PA164969",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "767954",
            "state": "AZ"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dseaderscontractstaff197038@samhealth.direct-ci.com",
            "affiliation": "N",
            "address_1": "501 NW Elks Dr Ste 100",
            "city": "Corvallis",
            "state": "OR",
            "country_code": "US",
            "postal_code": "973303757",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Salem, OR

Sources for this page

Verify at the official NPI Registry.