Mei Kuen Erica To, ARNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

AP61178758 Issued in WA

Practice address

825 Eastlake Ave E
Seattle, WA 98109-4405

Phone

(206) 520-5000

NPI assigned

Apr 10, 2021

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

Medicare fee-for-service enrollment

Enrolled in CA, 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

Specialty

Nurse Practitioner

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

The Oncology Institute Ca, a Professional CorporationGroup PAC ID 5698872398, 114 clinicians

The Association of University PhysiciansGroup PAC ID 0446162697, 3,484 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Fred Hutchinson Cancer Center Hospital, Seattle, WA, CCN 500138

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: meikuenerica.to@theoncologyinstitute.ikm.direct-ci.com

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 University Physicians

  dba University of Washington Physicians

  • Anesthesiology Physician
  • Seattle, WA
  • NPI 1023041159
  Medicare reassignment Care Compare group NPD
• The Oncology Institute Ca, a Professional Corporation

  dba The Oncology Institute of Hope and Innovation

  • Hematology & Oncology Physician
  • Downey, CA
  • NPI 1275651515
  Medicare reassignment Care Compare group NPD
• Regents of the Univ of Ca

  • Maternal & Fetal Medicine Physician
  • Sacramento, CA
  • NPI 1013906973
  Medicare reassignment NPD
• Regents of the Univ of Ca

  • Diagnostic Radiology Physician
  • Sacramento, CA
  • NPI 1477546406
  NPD
• Regents of the Univ of Ca

  • Trauma Surgery Physician
  • Sacramento, CA
  • NPI 1568455590
  NPD
• Starling Oncology Ca, a Professional Corporation

  dba Starling Oncology

  • Hematology & Oncology Physician
  • Las Vegas, NV
  • NPI 1225514508
  NPD
• Regents of the Univ of Ca

  • Pulmonary Disease Physician
  • Sacramento, CA
  • NPI 1437142692
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Fred Hutchinson Cancer Center

  • General Acute Care Hospital
  • Seattle, WA
  • NPI 1164493847
  Care Compare affiliation
• Fred Hutchinson Cancer Center

  • Community/Retail Pharmacy
  • Seattle, WA
  • NPI 1356415699

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1618012800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770163200000",
    "number": "1114507506",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 50095",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981455095",
            "telephone_number": "206-520-5700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "825 EASTLAKE AVE E",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981094405",
            "telephone_number": "206-520-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TO",
        "first_name": "MEI KUEN ERICA",
        "name_prefix": "Ms.",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2021-04-10",
        "last_updated": "2026-02-04",
        "certification_date": "2026-02-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "WA",
            "license": "AP61178758",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "WA",
            "license": "RN60633366",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Allisen Gena To, MD
• Dung Tri To, LMP
• Iris To, PHARMACY INTERN
• Jessica To, DNP, ARNP, FNP-BC
• Kenny Hyong To, DDS
• Tri Thuc To, D.D.S
• Marie Tobianski
• Christina Patricia Tobie, LMFT
• Tobin Psychotherapy and Counseling LLC
• Daniel Enoch Tobin, LMHC

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

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