Individual provider Active NPI

Stephanie Elizabeth Nonawzki, DO

  • Pediatrics Physician
  • Portland, OR
National Provider Identifier
1285214601
Registry record updated Sep 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatrics PhysicianTaxonomy code 208000000X
License
DO231332 Issued in OR
Practice address
501 N Graham St Ste 250
Portland, OR 97227-1651
Phone
(503) 413-2902
NPI assigned
Apr 9, 2021
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatrics Physician 208000000X 20A23890 CA
Pediatrics Physician 208000000X DO231332 OR Primary

Addresses

Primary practice location

501 N Graham St Ste 250
Portland, OR 97227-1651

Mailing address

5931 Filial St
Sacramento, CA 95835-2743
Phone (315) 748-0720

Other practice location 1

1 Quality Dr
Vacaville, CA 95688-9494
Phone (707) 624-4300

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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

Enrollment IDStateProvider typePAC IDDetails
I20250906000635 CA Practitioner - Pediatric Medicine 6406259290 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pediatric Medicine
Education
University of New England, College of Osteo Medicine, 2021
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

5820 Owens Dr
Pleasanton, CA 94588-3900

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
20A23890CAMDPediatrics Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Permanente Medical Group, Inc CurrentSince Aug 22, 2025 Accepting new patients
Permanente Medical Group Inc Pediatrics Current Accepting new patients
Permanente Medical Group Inc CurrentSince Aug 22, 2025 Accepting new patients

Locations

750 Auburn Ravine Rd
Auburn, CA 95603
Phone (530) 823-6131

4753 W Shaw Ave
Ste 101
Fresno, CA 93722
Phone (559) 277-8738

900 N Douty St
Hanford, CA 93230
Phone (559) 587-9014

101 Monroe St
Petaluma, CA 94954
Phone (707) 763-4109

1150 Veterans Blvd
Redwood City, CA 94063
Phone (650) 299-2015

901 Nevin Ave
Richmond, CA 94801
Phone (510) 307-1500

930 W Main St
Ripon, CA 95366
Phone (209) 599-4221

501 J St
Sacramento, CA 95814
Phone (916) 497-3000

2200 Ofarrell St
San Francisco, CA 94115
Phone (415) 202-2000

710 Lawrence Expy
Santa Clara, CA 95051
Phone (408) 236-6400

5615 Scotts Valley Dr
Scotts Valley, CA 95066
Phone (831) 430-2700

7373 West Ln
Stockton, CA 95210
Phone (209) 476-2000

1 Quality Dr
Vacaville, CA 95688
Phone (707) 453-5000

975 Sereno Dr
Vallejo, CA 94589
Phone (707) 651-1000

320 N Crawford St
Willows, CA 95988
Phone (530) 934-2834

Interoperability endpoints

  • Direct secure messaging: stephanie.nonawzki.p1@direct.nfpeds.nextgenshare.com

Organizations & group practices 3

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": "1617926400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1285214601",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5931 FILIAL ST",
            "city": "SACRAMENTO",
            "state": "CA",
            "postal_code": "958352743",
            "telephone_number": "315-748-0720"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "501 N GRAHAM ST STE 250",
            "city": "PORTLAND",
            "state": "OR",
            "postal_code": "972271651",
            "telephone_number": "503-413-2902"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Quality Dr",
            "address_purpose": "LOCATION",
            "city": "Vacaville",
            "state": "CA",
            "postal_code": "956889494",
            "country_code": "US",
            "telephone_number": "707-624-4300",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NONAWZKI",
        "first_name": "STEPHANIE",
        "middle_name": "ELIZABETH",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-04-09",
        "last_updated": "2026-09-03",
        "certification_date": "2026-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "20A23890",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "OR",
            "license": "DO231332",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Portland, OR

Sources for this page

Verify at the official NPI Registry.