Kamyar Nader, M.D.

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

License

C205416 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 456-8888

NPI assigned

Dec 19, 2012

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 NJ, DC, CA3 enrollments

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 3

Specialty

Hematology/Oncology

Education

Other, 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

UC RegentsGroup PAC ID 7416869516, 316 clinicians

Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348
• Medstar Washington Hospital Center Hospital, Washington, DC, CCN 090011

Merit-based Incentive Payment System (MIPS)

Final score

94.27 of 100Reported as group

Quality

80.29

Promoting interoperability

100

Improvement activities

40

Cost

75.48

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.

• Medstar Medical Group II LLC

  • General Practice Physician
  • Baltimore, MD
  • NPI 1184046187

  DC

  Medicare reassignment Care Compare group NPD
• UC Regents

  dba UCI Department of Medicine

  • Infectious Disease Physician
  • Orange, CA
  • NPI 1760430847
  Medicare reassignment Care Compare group
• CMC Department of Medicine Group PA

  • Hematology & Oncology Physician
  • Willingboro, NJ
  • NPI 1588796882
  Medicare reassignment NPD
• Professional Service Fund of Deborah Heart & Lung Center

  • Specialist
  • Browns Mills, NJ
  • NPI 1407803596
  Medicare reassignment NPD
• WHC Physician Group LLC

  • General Practice Physician
  • Washington, DC
  • NPI 1700154226
  Medicare reassignment NPD
• UC Regents

  dba UCI Department of Medicine

  • Hematology & Oncology Physician
  • Orange, CA
  • NPI 1356399380
  NPD
• UC Regents

  dba UCI Department of Medicine

  • Pulmonary Disease Physician
  • Orange, CA
  • NPI 1629026729
  NPD
• CMC Department of Medicine Group PA

  • Specialist
  • Camden, NJ
  • NPI 1386682094
  NPD
• Medstar Medical Group II LLC

  • Internal Medicine Physician
  • Washington, DC
  • NPI 1376887844
  NPD
• WHC Emerg Phys

  • Emergency Medical Services (Emergency Medicine) Physician
  • Washington, DC
  • NPI 1306260625
  NPD
• WHC Physician Group LLC

  • Psychiatry Physician
  • Washington, DC
  • NPI 1477996858
  NPD

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

• 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
• Washington Hospital Center Corporation

  • General Acute Care Hospital
  • Washington, DC
  • NPI 1548378235
  Care Compare affiliation

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

{
    "created_epoch": "1355875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764892800000",
    "number": "1528304524",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-8888"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "101 THE CITY DR S",
            "city": "ORANGE",
            "state": "CA",
            "postal_code": "928683201",
            "telephone_number": "714-456-8888"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2 Cooper Plz",
            "address_2": "400 Haddon Ave",
            "address_purpose": "LOCATION",
            "city": "Camden",
            "state": "NJ",
            "postal_code": "081031461",
            "country_code": "US",
            "telephone_number": "855-632-2667",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "401 Haddon Ave",
            "address_2": "E&R Building, 3rd Floor",
            "address_purpose": "LOCATION",
            "city": "Camden",
            "state": "NJ",
            "postal_code": "081031505",
            "country_code": "US",
            "telephone_number": "856-342-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NADER",
        "first_name": "KAMYAR",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2012-12-19",
        "last_updated": "2025-12-05",
        "certification_date": "2025-12-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "CA",
            "license": "C205416",
            "primary": true
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "NJ",
            "license": "25MA09280500",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alexia Sara Nabbout I
• Adib Nabily, MD
• Zeal Nadasia
• Muhammad Nadeem
• Nader Ronaghi MD Corp.
• Nassim Naderi, MD
• Bavani Nadeswaran, MD
• Ashni Nadgauda
• Adam Lee Nadler, MPT
• Sean Kuroshe Naficy, MD

• Hematology & Oncology Physician in Orange, CA
• Providers in Orange, 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 Dec 5, 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.