Ju Yon Sophie Yi, MD, DDS

Primary specialty

Oral and Maxillofacial Surgery (Dentist)Taxonomy code 1223S0112X

License

DENT.DE.60286345 Issued in WA

Practice address

450 NW Gilman Blvd Ste 101
Issaquah, WA 98027-2483

Phone

(425) 961-9600

Fax

(425) 961-9601

NPI assigned

May 24, 2007

Last updated

Mar 27, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Opted out of Medicare

Yes, effective Nov 10, 2017 through Nov 10, 2027

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Ju Yon Sophie Yi, MD, DDS, PLLC

  dba 425 Oral Surgery

  • Oral and Maxillofacial Surgery Clinic/Center
  • Issaquah, WA
  • NPI 1164361614
  NPD Authorized official
• Knoff & Fettig, PS

  • Oral and Maxillofacial Pathology Dentistry
  • Kirkland, WA
  • NPI 1528155686

  Single Specialty

  NPD (past)

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

{
    "created_epoch": "1179964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774569600000",
    "number": "1447461173",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "450 NW GILMAN BLVD STE 101",
            "city": "ISSAQUAH",
            "state": "WA",
            "postal_code": "980272483",
            "telephone_number": "425-961-9600",
            "fax_number": "425-961-9601"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 NW GILMAN BLVD STE 101",
            "city": "ISSAQUAH",
            "state": "WA",
            "postal_code": "980272483",
            "telephone_number": "425-961-9600",
            "fax_number": "425-961-9601"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "YI",
        "first_name": "JU YON",
        "middle_name": "SOPHIE",
        "name_prefix": "Dr.",
        "credential": "MD, DDS",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-24",
        "last_updated": "2026-03-27",
        "certification_date": "2026-03-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": "WA",
            "license": "DENT.DE.60286345",
            "primary": true
        },
        {
            "code": "1223S0112X",
            "taxonomy_group": "",
            "desc": "Dentist, Oral and Maxillofacial Surgery",
            "state": "WA",
            "license": "MD.MD.60287405",
            "primary": false
        },
        {
            "code": "204E00000X",
            "taxonomy_group": "",
            "desc": "Oral & Maxillofacial Surgery",
            "state": "WA",
            "license": "MD.MD.60287405",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2033733",
            "state": "WA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Amanda Yee
• James Fee Yee, M.D.
• Yu-Chun Yeh, NP
• Anthony Alexander Yengo, DPT
• Laura Christine Yengo, DPT
• Troy Yi, MD
• Allison A Yocum, PT, DSC, PCS
• Sunyoung Yoon, MD
• Glenn J. Yorita, DDS, MS
• Teri Tsuchiya Yoshimura, O.D.

• Oral and Maxillofacial Surgery (Dentist) in Issaquah, WA
• Providers in Issaquah, WA by specialty
• Oral and Maxillofacial Surgery (Dentist) in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 27, 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.