Kenneth J Chang, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

000000G61843 Issued in CA

Practice address

500 Superior Ave Ste 240
Newport Beach, CA 92663-3660

Phone

(949) 764-8959

NPI assigned

Oct 16, 2006

Last updated

May 7, 2026By the provider in NPPES

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

GastroenterologyAlso: Internal Medicine

Education

Warren Alpert Medical School of Brown University, 1985

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hoag ClinicGroup PAC ID 3274872064, 447 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224

Merit-based Incentive Payment System (MIPS)

Final score

87.51 of 100Reported as group

Quality

84.12

Promoting interoperability

100

Improvement activities

40

Cost

74.24

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as apm

Quality

83.7

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://api.platform.athenahealth.com/10944/brand/3/csg/1/fhir/r4
• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Hoag Clinic

  • Primary Care Clinic/Center
  • Newport Beach, CA
  • NPI 1942799523
  Medicare reassignment Care Compare group NPD
• UC Regents

  dba UCI Department of Medicine

  • Infectious Disease Physician
  • Orange, CA
  • NPI 1760430847
  Medicare reassignment NPD
• UC Regents

  dba UCI Department of Medicine

  • Pulmonary Disease Physician
  • Orange, CA
  • NPI 1629026729
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Gastroenterology Physician
  • Orange, CA
  • NPI 1902854078
  NPD
• Hoag Hospital

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1689864365
  NPD (past)
• UC Regents

  dba UCI Department of Medicine

  • Internal Medicine Physician
  • Orange, CA
  • NPI 1205884392
  NPD (past)
• University of California Irvine

  dba UCI Infusion Center

  • Infusion Therapy Clinic/Center
  • Irvine, CA
  • NPI 1417027475
  NPD (past)
• University of California Irvine

  dba Uci Health

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  NPD (past)

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

• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  Care Compare affiliation

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

{
    "created_epoch": "1160956800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778112000000",
    "number": "1518047604",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "500 SUPERIOR AVE STE 240",
            "city": "NEWPORT BEACH",
            "state": "CA",
            "postal_code": "926633660",
            "telephone_number": "949-764-8959"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "500 SUPERIOR AVE STE 240",
            "city": "NEWPORT BEACH",
            "state": "CA",
            "postal_code": "926633660",
            "telephone_number": "949-764-8959"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "KENNETH J",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-16",
        "last_updated": "2026-05-07",
        "certification_date": "2026-05-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "CA",
            "license": "000000G61843",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE",
            "identifier": "100014901",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Andrew Chang, PHARM.D.
• Audrey Willa Chang, P.N.P.
• Catherine Chang, M.D.
• David C Chang, M.D.
• Grace Young Chang, L. AC
• Miles C. Chang, M.D.
• Nancy Chang
• Olivia Wei Chang, PA-C
• Steven C Chang, M.D.
• Change Academy at Lake of the Ozarks (Embark Behavioral Health)

• Gastroenterology Physician in Newport Beach, CA
• Providers in Newport Beach, CA by specialty
• Gastroenterology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 7, 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.