Johnny K Chang, MD

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

A70618 Issued in CA

Practice address

18133 Ventura Blvd Ste 300
Tarzana, CA 91356-3645

Phone

(818) 981-3818

Fax

(818) 784-3106

NPI assigned

Jul 25, 2006

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

Other identifiers 1

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

Hematology/OncologyAlso: Medical Oncology

Education

University of California, Geffen School of Medicine, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cedars-Sinai Medical Care FoundationGroup PAC ID 0941106645, 1,684 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Cedars-Sinai Medical Center Hospital, Los Angeles, CA, CCN 050625
• Providence Cedars Sinai Tarzana Medical Center Hospital, Tarzana, CA, CCN 050761

Merit-based Incentive Payment System (MIPS)

Final score

89.14 of 100Reported as group

Quality

84.79

Promoting interoperability

99

Improvement activities

40

Cost

73.15

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• Direct secure messaging: jchang216263@direct.cshs.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.

• Cedars-Sinai Medical Care Foundation

  • Specialist
  • Los Angeles, CA
  • NPI 1316984388
  Medicare reassignment Care Compare group NPD
• Long Beach Memorial Medical

  • Rehabilitation Hospital Unit
  • Long Beach, CA
  • NPI 1396791414
  NPD (past)
• Tarzana Medical Center LLC

  • General Acute Care Hospital
  • Tarzana, CA
  • NPI 1821250762
  NPD (past)

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

• Cedars-Sinai Medical Center

  • General Acute Care Hospital
  • Los Angeles, CA
  • NPI 1639172372
  Care Compare affiliation
• Cedars-Sinai Medical Center

  • General Acute Care Hospital
  • West Hollywood, CA
  • NPI 1891940326
  Care Compare affiliation
• Tarzana Medical Center LLC

  • General Acute Care Hospital
  • Tarzana, CA
  • NPI 1821250762
  Care Compare affiliation

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

{
    "created_epoch": "1153785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785283200000",
    "number": "1366465304",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "18133 VENTURA BLVD #300",
            "city": "ENCINO",
            "state": "CA",
            "postal_code": "91536",
            "telephone_number": "818-981-3818",
            "fax_number": "818-784-3106"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "18133 VENTURA BLVD STE 300",
            "city": "TARZANA",
            "state": "CA",
            "postal_code": "913563645",
            "telephone_number": "818-981-3818",
            "fax_number": "818-784-3106"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "16133 Ventura Blvd",
            "address_2": "Ste 470",
            "address_purpose": "LOCATION",
            "city": "Encino",
            "state": "CA",
            "postal_code": "914362402",
            "country_code": "US",
            "telephone_number": "818-981-3818",
            "fax_number": "818-784-3106",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHANG",
        "first_name": "JOHNNY",
        "middle_name": "K",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-25",
        "last_updated": "2026-07-29",
        "certification_date": "2026-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "A70618",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A786180",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Cathia N Chalvardjian, MA, MFT
• Ka Kei Chan
• Jothi Jayshree Chand
• Mudjianto Chandra, M.D.
• Elizabeth Chaneske, LCSW
• Ya-Hsin Chang
• Change My Eating, Inc
• Charles L Kimelman, MD, Inc.
• Charlene Charthern, COSMOTOLOGIST
• Cesar Chavarria, M.D.

• Hematology & Oncology Physician in Tarzana, CA
• Providers in Tarzana, CA by specialty
• Hematology & Oncology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 29, 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.