Seungyoun Lyu, DDS

Primary specialty

DentistTaxonomy code 122300000X

License

DDS104870 Issued in CA

Practice address

22331 Mission Blvd
Hayward, CA 94541-3911

Phone

(510) 471-5880

NPI assigned

Mar 30, 2015

Last updated

Apr 23, 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in OH

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.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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.

• Tiburcio Vasquez Health Center, Inc.

  • Federally Qualified Health Center (FQHC)
  • Hayward, CA
  • NPI 1144597477
  NPD (past)
• Illini Smiles Dental Care P.C.

  • General Practice Dentistry
  • Paxton, IL
  • NPI 1104346220
  NPD (past)

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

{
    "created_epoch": "1427673600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776902400000",
    "number": "1790170504",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "22331 MISSION BLVD",
            "city": "HAYWARD",
            "state": "CA",
            "postal_code": "945413911",
            "telephone_number": "510-471-5880"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "22331 MISSION BLVD",
            "city": "HAYWARD",
            "state": "CA",
            "postal_code": "945413911",
            "telephone_number": "510-471-5880"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "16110 E 14th St",
            "address_purpose": "LOCATION",
            "city": "Ashland",
            "state": "CA",
            "postal_code": "945783002",
            "country_code": "US",
            "telephone_number": "510-471-5880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "28300 Huntwood Ave",
            "address_purpose": "LOCATION",
            "city": "Hayward",
            "state": "CA",
            "postal_code": "945445425",
            "country_code": "US",
            "telephone_number": "510-471-5880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "33255 9th St",
            "address_purpose": "LOCATION",
            "city": "Union City",
            "state": "CA",
            "postal_code": "945872137",
            "country_code": "US",
            "telephone_number": "510-471-5880",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "680 W Tennyson Rd Rm 12",
            "address_purpose": "LOCATION",
            "city": "Hayward",
            "state": "CA",
            "postal_code": "945445236",
            "country_code": "US",
            "telephone_number": "510-471-5880",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "LYU",
        "first_name": "SEUNGYOUN",
        "credential": "DDS",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2015-03-30",
        "last_updated": "2026-04-23",
        "certification_date": "2026-04-23",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "CA",
            "license": "DDS104870",
            "primary": true
        },
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "IL",
            "license": "319019913",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Cory Ly-Peh
• Catherine Ly
• Tiffany Ly
• Brooke Lyons-Justus
• Reuben Lyons
• Andrew J Ma
• Angela Ma, PHARM.D.
• Oanh Thuy Ma
• Rosemae Maagad
• Monique F. Mabey, MD

• Dentist in Hayward, CA
• Providers in Hayward, CA by specialty
• Dentist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 23, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.