Sean I-Hsin Tsai, D.O.

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

20A7930 Issued in CA

Practice address

1108 Fremont Ave
South Pasadena, CA 91030-3227

Phone

(626) 793-0660

Fax

(626) 793-0660

NPI assigned

Jul 5, 2006

Sex

Male

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 CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Family Practice

Education

Other, 2000

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

State licenses

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.

• Sean Tsai D O Professional Corporation

  • Neuromusculoskeletal Medicine & OMM Physician
  • South Pasadena, CA
  • NPI 1780776013
  Medicare reassignment Authorized official

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

{
    "created_epoch": "1152057600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767312000000",
    "number": "1932130697",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1108 FREMONT AVE",
            "city": "SOUTH PASADENA",
            "state": "CA",
            "postal_code": "910303227",
            "telephone_number": "626-793-0660",
            "fax_number": "626-793-0660"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1108 FREMONT AVE",
            "city": "SOUTH PASADENA",
            "state": "CA",
            "postal_code": "910303227",
            "telephone_number": "626-793-0660",
            "fax_number": "626-793-0660"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TSAI",
        "first_name": "SEAN",
        "middle_name": "I-HSIN",
        "credential": "D.O.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-05",
        "last_updated": "2026-01-02",
        "certification_date": "2026-01-02",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "204D00000X",
            "taxonomy_group": "",
            "desc": "Neuromusculoskeletal Medicine & OMM",
            "state": "CA",
            "license": "20A7930",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "CA",
            "license": "20A7930",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Miguel H. Trejo
• Kristine Grace Troesch, DC
• Kristina Ann Bradley Trujillo, PH.D.
• My Bich Truong, NP
• Robert Tsai, LMFT
• Vincent John Tso, DMD
• Daniel Verran Tubbs
• Colleen Marie Turkal
• Dana Turpin
• Tony Tzeng, MFT

• Family Medicine Physician in South Pasadena, CA
• Providers in South Pasadena, CA by specialty
• Family Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 2, 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.