Roger Kornu, M.D.

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

License

A78140 Issued in CA

Practice address

2552 Walnut Ave Ste 200
Tustin, CA 92780-6983

Phone

(714) 406-4461

Fax

(714) 669-9790

NPI assigned

Oct 4, 2006

Last updated

Jan 30, 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

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

Rheumatology

Education

University of Texas Southwestern Medical School at Dallas, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Roger Kornu MD PCGroup PAC ID 2365700564, 3 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Comfort at Home Home health agency, Woodland Hills, CA, CCN 559239
• Hoag Memorial Hospital Presbyterian Hospital, Newport Beach, CA, CCN 050224
• Uci Health-Orange Hospital, Orange, CA, CCN 050348
• Providence St. Joseph Hospital Hospital, Orange, CA, CCN 050069

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as individual

Quality

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• BSC 65 PLUS INDIVIDUAL MAPD

Interoperability endpoints

• FHIR API: https://fhir4.healow.com/fhir/r4/CFHFAA

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.

• Roger Kornu MD PC

  dba Southern California Rheumatology

  • Rheumatology Physician
  • Tustin, CA
  • NPI 1912418674
  Medicare reassignment Care Compare group NPD Authorized official
• Michael I Keller M.D. Inc

  dba San Diego Arthritis Medical Clinic

  • Specialist
  • San Diego, CA
  • NPI 1861593063
  NPD (past)
• Robin K Dore MD Inc

  • Rheumatology Physician
  • Tustin, CA
  • NPI 1427248491
  NPD (past)

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

• Comfort at Home

  • Home Health Agency
  • Woodland Hills, CA
  • NPI 1720552748
  Care Compare affiliation
• Hoag Memorial Hospital Presbyterian

  • General Acute Care Hospital
  • Newport Beach, CA
  • NPI 1518951300
  Care Compare affiliation
• St Joseph Hospital of Orange

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1912982216
  Care Compare affiliation
• St. Joseph Hospital of Orange

  dba Providence St. Joseph Hospital

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1558575746
  Care Compare affiliation
• University of California Irvine

  dba University of California Irvine - Cac Urgent Care

  • Urgent Care Clinic/Center
  • Irvine, CA
  • NPI 1518739309

  Hospital

  Care Compare affiliation
• University of California Irvine

  dba Uci Health

  • General Acute Care Hospital
  • Orange, CA
  • NPI 1689608150
  Care Compare affiliation

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

{
    "created_epoch": "1159920000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769731200000",
    "number": "1841386349",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2552 WALNUT AVE STE 200",
            "city": "TUSTIN",
            "state": "CA",
            "postal_code": "927806983",
            "telephone_number": "714-406-4461",
            "fax_number": "714-669-9790"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2552 WALNUT AVE STE 200",
            "city": "TUSTIN",
            "state": "CA",
            "postal_code": "927806983",
            "telephone_number": "714-406-4461",
            "fax_number": "714-669-9790"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KORNU",
        "first_name": "ROGER",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-10-04",
        "last_updated": "2026-01-30",
        "certification_date": "2026-01-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "CA",
            "license": "A78140",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Jasmine Koo
• Kory Golchert DDS a Dental Corporation
• Stela Georgieva Kostova-Abadjieva, MD
• Emilie Kovalik, BA, RBT
• Valeria I Kozak, MD
• Michael Ryan Krafft, MD

• Rheumatology Physician in Tustin, CA
• Providers in Tustin, CA by specialty
• Rheumatology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 30, 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.