Garrett Tien, D.D.S.

Primary specialty

General Practice DentistryTaxonomy code 1223G0001X

License

60220 Issued in CA

Practice address

22331 Mission Blvd
Hayward, CA 94541-3911

Phone

(510) 471-5880

NPI assigned

Mar 15, 2011

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

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

Interoperability endpoints

• Direct secure messaging: gtien270485@direct.ochin.org

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.

• Tibucio Vasquez Health Center, Inc.

  • Federally Qualified Health Center (FQHC)
  • Hayward, CA
  • NPI 1083174684
  NPD (past)
• Tiburcio Vasquez Health Center, Inc.

  • Federally Qualified Health Center (FQHC)
  • Hayward, CA
  • NPI 1144597477
  NPD (past)

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

{
    "created_epoch": "1300147200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775606400000",
    "number": "1811296916",
    "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": "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"
        },
        {
            "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": "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"
        }
    ],
    "basic": {
        "last_name": "TIEN",
        "first_name": "GARRETT",
        "credential": "D.D.S.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2011-03-15",
        "last_updated": "2026-04-08",
        "certification_date": "2026-04-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1223G0001X",
            "taxonomy_group": "",
            "desc": "Dentist, General Practice",
            "state": "CA",
            "license": "60220",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tiburcio Vasquez Health Center, Inc.
• Tiburcio Vasquez Health Center, Inc.
• Tiburcio Vasquez Health Center, Inc.
• Tiburcio Vasquez Health Center.Inc
• Elay Bereket Tiedros
• Pauline Joice Tijam
• Maria Eugenia Tijerino-Lew, MSW, ACSW
• Leniza Tineo
• Louis Hilario Tiscareno, D.C.
• Elizabeth Tisor

• General Practice Dentistry in Hayward, CA
• Providers in Hayward, CA by specialty
• General Practice Dentistry in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 8, 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.