Individual provider Active NPI

Marta Beth Michniewicz

  • Family Nurse Practitioner
  • Portland, OR
National Provider Identifier
1497472906
Registry record updated Mar 9, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Family Nurse PractitionerTaxonomy code 363LF0000X
License
10020363 Issued in OR
Practice address
19500 SE Stark St
Portland, OR 97233-5757
Phone
(800) 813-2000
NPI assigned
Oct 25, 2022
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 9, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Family Nurse Practitioner 363LF0000X 10020363 OR Primary
Emergency Registered Nurse 163WE0003X 201404493RN OR

Addresses

Primary practice location

19500 SE Stark St
Portland, OR 97233-5757

Mailing address

500 NE Multnomah St Ste 100
Portland, OR 97232-2099
Phone (800) 813-2000

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address marta.michniewicz@kp.org Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OR, WA2 enrollments
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 2

Enrollment IDStateProvider typePAC IDDetails
I20240216002289 OR Practitioner - Nurse Practitioner 0345684460 Reassigns benefits to 1 organization
I20240216003067 WA Practitioner - Nurse Practitioner 0345684460 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Kaiser Foundation Health Plan of the NorthwestGroup PAC ID 5799688230, 1,805 clinicians

Practice addresses (Care Compare)

14406 NE 20TH Ave
Vancouver, WA 98686-1448
Phone (800) 813-2000

19500 SE Stark St
Portland, OR 97233-5757
Phone (800) 813-2000

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
201404493RNORMDEmergency Registered Nurse

Practice roles

OrganizationSpecialtyStatusNew patients
Kaiser Foundation Health Plan of the Northwest CurrentSince Jan 29, 2024 Accepting new patients
Kaiser Foundation Health Plan of the Northwest CurrentSince Jan 29, 2024 Accepting new patients
Kaiser Foundation Health Plan of the Northwest CurrentSince Jan 29, 2024 Accepting new patients
Kaiser Foundation Health Plan of the Northwest Current Accepting new patients

Locations

10100 SE Sunnyside Rd
Clackamas, OR 97015
Phone (503) 571-2946

19500 SE Stark St
Portland, OR 97233
Phone (503) 669-3900

500 NE Multnomah St
Ste 100
Portland, OR 97232
Phone (503) 499-5200

500 NE Multnomah St
Fl 11
Portland, OR 97232

2400 Lancaster Dr NE
Salem, OR 97305
Phone (503) 361-5400

1230 7th Ave
Longview, WA 98632
Phone (360) 575-4801

7101 NE 137th Ave
Vancouver, WA 98682
Phone (360) 418-6000

14406 NE 20th Ave
Vancouver, WA 98686
Phone (360) 418-6001

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.

NPI Registry JSON

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

{
    "created_epoch": "1666656000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773014400000",
    "number": "1497472906",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "500 NE MULTNOMAH ST STE 100",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972322099",
            "telephone_number": "800-813-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "19500 SE STARK ST",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972335757",
            "telephone_number": "800-813-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MICHNIEWICZ",
        "first_name": "MARTA",
        "middle_name": "BETH",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-10-25",
        "last_updated": "2026-03-09",
        "certification_date": "2026-03-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "OR",
            "license": "10020363",
            "primary": true
        },
        {
            "code": "163WE0003X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Emergency",
            "state": "OR",
            "license": "201404493RN",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "marta.michniewicz@kp.org",
            "affiliation": "N",
            "endpointDescription": "work email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "7245 SE 69th Ave",
            "city": "Portland",
            "state": "OR",
            "country_code": "US",
            "postal_code": "972068070",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.