Sarah A. Korkowski, ARNP

Primary specialty

Neonatal Nurse PractitionerTaxonomy code 363LN0000X

License

AP30006489 Issued in WA

Practice address

4800 Sand Point Way NE
CSB 240
Seattle, WA 98105-3901

Phone

(206) 987-2394

Fax

(206) 987-7126

NPI assigned

Jul 18, 2006

Sex

Female

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Other identifiers 3

Other names 1

• Sarah A. Martenstein Former name

Medicare fee-for-service enrollment

Enrolled in WA

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

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

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.

• The Association of Chrmc and University Physicians

  • Pediatrics Physician
  • Seattle, WA
  • NPI 1255449963
  Medicare reassignment NPD
• The Association of University Physicians

  • Anesthesiology Physician
  • Seattle, WA
  • NPI 1023041159
  Medicare reassignment NPD
• Association of CHMC and University Physicians

  • Pediatrics Physician
  • Richland, WA
  • NPI 1851680664
  NPD
• Seattle Children'S Hospital

  • Home Infusion Agency
  • Bothell, WA
  • NPI 1245383348
  NPD (past)

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

{
    "created_epoch": "1153180800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742169600000",
    "number": "1740209352",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4800 SAND POINT WAY NE",
            "address_2": "CSB 240",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981053901",
            "telephone_number": "206-987-2394",
            "fax_number": "206-987-7126"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4800 SAND POINT WAY NE",
            "address_2": "CSB 240",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981053901",
            "telephone_number": "206-987-2394",
            "fax_number": "206-987-7126"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1959 NE Pacific St",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981953901",
            "country_code": "US",
            "telephone_number": "206-520-5000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KORKOWSKI",
        "first_name": "SARAH",
        "middle_name": "A.",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-18",
        "last_updated": "2025-03-17",
        "certification_date": "2025-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "WA",
            "license": "RN00148675",
            "primary": false
        },
        {
            "code": "163WP0200X",
            "taxonomy_group": "",
            "desc": "Registered Nurse, Pediatrics",
            "state": "WA",
            "license": "AP30006489",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "WA",
            "license": "AP30006489",
            "primary": false
        },
        {
            "code": "363LN0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Neonatal",
            "state": "WA",
            "license": "AP30006489",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LABOR & INDUSTRY",
            "identifier": "0204981",
            "state": "WA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "REGENCE BLUESHIELD",
            "identifier": "94119U",
            "state": "WA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9637133",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SARAH",
            "last_name": "MARTENSTEIN",
            "middle_name": "A.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Aashiyana Faruk Koreishi, M.D.
• David Koren, MD, PHD
• Madison Brooke Korenkiewicz, RN
• Cheryl Koressel
• Arzu Korkmaz Bayir, DDS
• Cherie Hanahn Korman, R.N.
• Andrea Lynn Kormondy, LMP
• Audrey Korn
• Barry John Kornegay, BCBA
• Kent Alan Korneisel, O.D.

• Neonatal Nurse Practitioner in Seattle, WA
• Providers in Seattle, WA by specialty
• Neonatal Nurse Practitioner in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 17, 2025; 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.