Kasey Siu, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

20A20152 Issued in CA

Practice address

11500 Brookshire Ave
Downey, CA 90241-4917

Phone

(562) 904-5000

NPI assigned

Jun 28, 2019

Sex

Female

Sole proprietor

Yes

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: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

Other, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Pih Health PhysiciansGroup PAC ID 8426951328, 616 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Presbyterian Intercommunity Hospital Home Health Home health agency, La Mirada, CA, CCN 057187
• Pih Health Downey Hospital Hospital, Downey, CA, CCN 050393
• Pih Health Good Samaritan Hospital Hospital, Los Angeles, CA, CCN 050471

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

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 and National Provider Directory roles.

• Pih Health Physicians

  • Family Medicine Physician
  • Whittier, CA
  • NPI 1609233899

  Multi-Specialty

  Medicare reassignment Care Compare group NPD
• Pih Health Physicians

  • Anesthesiology Physician
  • Downey, CA
  • NPI 1447931506
  NPD
• Pih Health Physicians

  • Orthopaedic Surgery Physician
  • Santa Fe Springs, CA
  • NPI 1942721626

  Multi-Specialty

  NPD
• Southern California Permanente Medical Group

  • Health Maintenance Organization
  • Baldwin Park, CA
  • NPI 1770515280

  Multi-Specialty

  NPD

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

• Pih Health Downey Hospital

  • General Acute Care Hospital
  • Downey, CA
  • NPI 1265433551
  Care Compare affiliation
• Pih Health Good Samaritan Hospital

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1508859323
  Care Compare affiliation
• Pih Health Whittier Hospital

  • Home Health Agency
  • La Mirada, CA
  • NPI 1649275868
  Care Compare affiliation

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

{
    "created_epoch": "1561680000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760054400000",
    "number": "1447811559",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "11500 BROOKSHIRE AVE",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902414917",
            "telephone_number": "562-904-5000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11500 BROOKSHIRE AVE",
            "city": "DOWNEY",
            "state": "CA",
            "postal_code": "902414917",
            "telephone_number": "562-904-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIU",
        "first_name": "KASEY",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2019-06-28",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "20A20152",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Vivian Lee Sinkaset, PHARM.D.
• Sir Thomas More Marriage & Family Clinic
• Jenny Leigh Siriban
• Mary Beth Sisk, PT
• Christian Yeoj Sison, NP
• Souad Skafi
• Laura Kristin Skeeters, MPT
• Skilled Home Health, Inc.
• Sleepmed of California Inc
• Ariana Slifer

• Internal Medicine Physician in Downey, CA
• Providers in Downey, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 10, 2025; 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.