Isla Sage Oliver, CNM

Primary specialty

Advanced Practice MidwifeTaxonomy code 367A00000X

License

AP61469789 Issued in WA

Practice address

2918 Colby Ave Ste 206
Everett, WA 98201-4077

Phone

(425) 654-1376

Fax

(229) 212-4372

NPI assigned

Aug 18, 2022

Last updated

Jun 4, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other names 1

• Isla Sage Cook-Biggert 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

Specialty

Nurse Practitioner

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Optum Care Washington PLLCGroup PAC ID 6406752153, 684 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Nurse Midwife, Nurse Practitioner

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/3889/brand/1/csg/1/fhir/r4
• Direct secure messaging: ioliver87004@direct.tecmc.com

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

• Optum Care Washington PLLC

  • Multi-Specialty Clinic/Center
  • Everett, WA
  • NPI 1831186766
  Medicare reassignment Care Compare group NPD
• The Polyclinic PLLC

  dba Optum - Broadway

  • Audiologist
  • Seattle, WA
  • NPI 1174594634
  Medicare reassignment NPD
• Cedar & Pine LLC

  • Advanced Practice Midwife
  • Everett, WA
  • NPI 1871440214
  NPD Authorized official
• Optum Care Washington PLLC

  • Durable Medical Equipment & Medical Supplies
  • Marysville, WA
  • NPI 1194428425
  NPD
• The Polyclinic

  • Ambulatory Surgical Clinic/Center
  • Seattle, WA
  • NPI 1073944039
  NPD
• The Polyclinic PLLC

  dba Optum Tacoma

  • Durable Medical Equipment & Medical Supplies
  • Tacoma, WA
  • NPI 1831411487
  NPD
• Optum Care Washington PLLC

  • Ambulatory Surgical Clinic/Center
  • Everett, WA
  • NPI 1154318103
  NPD (past)

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

{
    "created_epoch": "1660780800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780531200000",
    "number": "1326766056",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2918 COLBY AVE STE 206",
            "city": "EVERETT",
            "state": "WA",
            "postal_code": "982014077",
            "telephone_number": "425-654-1376",
            "fax_number": "229-212-4372"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2918 COLBY AVE STE 206",
            "city": "EVERETT",
            "state": "WA",
            "postal_code": "982014077",
            "telephone_number": "425-654-1376",
            "fax_number": "229-212-4372"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "900 Pacific Ave Ste 500",
            "address_purpose": "LOCATION",
            "city": "Everett",
            "state": "WA",
            "postal_code": "982014189",
            "country_code": "US",
            "telephone_number": "425-339-5430",
            "fax_number": "425-339-5454",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OLIVER",
        "first_name": "ISLA",
        "middle_name": "SAGE",
        "credential": "CNM",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-08-18",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367A00000X",
            "taxonomy_group": "",
            "desc": "Advanced Practice Midwife",
            "state": "WA",
            "license": "AP61469789",
            "primary": true
        },
        {
            "code": "367A00000X",
            "taxonomy_group": "",
            "desc": "Advanced Practice Midwife",
            "state": "WA",
            "license": "RN61084888",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ISLA",
            "last_name": "COOK-BIGGERT",
            "middle_name": "SAGE",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Briggett Lorraine Okocha, MHT III
• Lori Ann Olberding, MSW
• Susan Oldenkamp, M.D.
• Alexandra Sergeevna Olgova, MA, LMHC
• Eileen M. Olinger, MD
• Michael James Oliver
• William Donald Oliver, DDS
• Amanda Olliges
• Andrea Olmedo-Amaya, LICSWA
• Merline Olorunishola

• Advanced Practice Midwife in Everett, WA
• Providers in Everett, WA by specialty
• Advanced Practice Midwife in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 2026; 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.