David Dae Kyu CHI, M.D.

Primary specialty

Surgical Oncology PhysicianTaxonomy code 2086X0206X

License

G84570 Issued in CA

Practice address

1250 La Venta Dr Ste 100
Westlake Village, CA 91361-3774

Phone

(805) 496-5153

NPI assigned

Jan 16, 2007

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

General SurgeryAlso: Surgical Oncology

Education

University of California, Geffen School of Medicine, 1990

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Hospital & facility affiliations

• Assisted Home Care Home health agency, Mission Hills, CA, CCN 557089
• Los Robles Hospital & Medical Center Hospital, Thousand Oaks, CA, CCN 050549
• Adventist Health Simi Valley Hospital, Simi Valley, CA, CCN 050236

Merit-based Incentive Payment System (MIPS)

Final score

30 of 100Reported as individual

Quality

0

Improvement activities

0

Cost

100

Procedures performed for Medicare patients

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 and National Provider Directory roles.

• David D. CHI, M.D., F.a.C.S., a Medical Corp.

  • Surgical Oncology Physician
  • Thousand Oaks, CA
  • NPI 1154649796

  Surgery

  Medicare reassignment NPD Authorized official
• Los Robles Regional Medical Center

  • General Acute Care Hospital
  • Thousand Oaks, CA
  • NPI 1033163019
  NPD (past)

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

• Assisted Home Recovery, Inc.

  • Home Health Agency
  • Mission Hills, CA
  • NPI 1033156765
  Care Compare affiliation
• Assisted Home Recovery, Inc.

  • Home Health Agency
  • Thousand Oaks, CA
  • NPI 1831141845
  Care Compare affiliation
• Los Robles Regional Medical Center

  • General Acute Care Hospital
  • Thousand Oaks, CA
  • NPI 1306890389
  Care Compare affiliation
• Simi Valley Hospital and Health Care Services

  • General Acute Care Hospital
  • Simi Valley, CA
  • NPI 1063495190
  Care Compare affiliation

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

{
    "created_epoch": "1168905600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785456000000",
    "number": "1881746428",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5767 W CENTURY BLVD STE 400",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900455631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1250 LA VENTA DR STE 100",
            "city": "WESTLAKE VILLAGE",
            "state": "CA",
            "postal_code": "913613774",
            "telephone_number": "805-496-5153"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "555 Marin Street",
            "address_2": "Suite 210",
            "address_purpose": "LOCATION",
            "city": "Thousand Oaks",
            "state": "CA",
            "postal_code": "913604105",
            "country_code": "US",
            "telephone_number": "805-497-7785",
            "fax_number": "805-497-7728",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHI",
        "first_name": "DAVID",
        "middle_name": "DAE KYU",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-01-16",
        "last_updated": "2026-07-31",
        "certification_date": "2026-07-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208600000X",
            "taxonomy_group": "",
            "desc": "Surgery",
            "state": "CA",
            "license": "G84570",
            "primary": false
        },
        {
            "code": "2086X0206X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Oncology",
            "state": "CA",
            "license": "G84570",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Chen Schwezin Inc
• Fang Chen
• Helen Shao-Chen Chang Chen, L.AC.
• Joseph Juyo Chen, M.D.
• Justin Chen, PHARM.D.
• Nicole Danielle Chiaro, DC
• Scott Norio Chikuami, OTR/L
• Christine Childers
• Marsha Childs, LCSW
• Chiropractic Sports Institute a Professional Corporation

• Surgical Oncology Physician in Westlake Village, CA
• Providers in Westlake Village, CA by specialty
• Surgical Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 31, 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.