Gemmy Hannsun, MD

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

A153743 Issued in CA

Practice address

101 The City Dr S
Orange, CA 92868-3201

Phone

(714) 456-8888

NPI assigned

Feb 26, 2014

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

Diagnostic Radiology

Education

University of California, Davis School of Medicine, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

UC RegentsGroup PAC ID 3274446182, 105 clinicians

Beverly Radiology Medical Group IIIGroup PAC ID 3476466376, 327 clinicians

Desert Advanced Imaging Medical CenterGroup PAC ID 6406749613, 209 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uci Health-Orange Hospital, Orange, CA, CCN 050348

Merit-based Incentive Payment System (MIPS)

Final score

91.25 of 100Reported as group

Quality

75

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations (25 of 38)

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.

• Beverly Radiology Medical Group III

  • Diagnostic Radiology Physician
  • Los Angeles, CA
  • NPI 1962457812
  Medicare reassignment Care Compare group NPD
• Desert Advanced Imaging Medical Center

  • Diagnostic Radiology Physician
  • Palm Desert, CA
  • NPI 1568416147
  Medicare reassignment Care Compare group NPD
• UC Regents

  • Diagnostic Radiology Physician
  • Orange, CA
  • NPI 1346298528
  Medicare reassignment Care Compare group NPD
• Diagnostic Radiological Imaging

  • Diagnostic Radiology Physician
  • Sacramento, CA
  • NPI 1710931910
  Medicare reassignment NPD
• Fresno Imaging Center

  • Diagnostic Radiology Physician
  • Fresno, CA
  • NPI 1659456499
  Medicare reassignment NPD
• Modesto Advanced Diagnostic Imaging Medical Center

  • Diagnostic Radiology Physician
  • Modesto, CA
  • NPI 1730133893
  Medicare reassignment NPD
• Norcal Imaging

  • Diagnostic Radiology Physician
  • Concord, CA
  • NPI 1003965997
  Medicare reassignment NPD
• Regents of the University of California

  • Diagnostic Radiology Physician
  • San Diego, CA
  • NPI 1558463927
  Medicare reassignment NPD
• Santa Rosa Imaging Medical Center

  • Diagnostic Radiology Physician
  • Santa Rosa, CA
  • NPI 1689890444
  Medicare reassignment NPD
• Stockton Diagnostic Imaging

  • Diagnostic Radiology Physician
  • Stockton, CA
  • NPI 1356538201
  Medicare reassignment NPD
• Radnet Medical Imaging-San Francisco

  • Diagnostic Radiology Physician
  • San Francisco, CA
  • NPI 1548345382
  Medicare reassignment
• Beverly Radiology Medical Group III

  • Diagnostic Radiology Physician
  • Encino, CA
  • NPI 1396933156
  NPD

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

• University of California Irvine

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

  Hospital

  Care Compare affiliation
• University of California Irvine

  • 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": "1393372800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1768867200000",
    "number": "1992120026",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2201 N GRAND AVE UNIT 10773",
            "city": "SANTA ANA",
            "state": "CA",
            "postal_code": "927112239"
        },
        {
            "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": "1100 N Tustin Ave Ste A",
            "address_purpose": "LOCATION",
            "city": "Santa Ana",
            "state": "CA",
            "postal_code": "927053509",
            "country_code": "US",
            "telephone_number": "714-643-5407",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HANNSUN",
        "first_name": "GEMMY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-02-26",
        "last_updated": "2026-01-20",
        "certification_date": "2026-01-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CA",
            "license": "A153743",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Michael David Hanna, L.M.F.T.
• Ramy Magdy Hanna, M.D.
• Sandy Hanna
• Sebastian S Hanna, MD
• Bernard Ray Hannam, D.O.
• Leanna Hansen, MD
• Sharon Lynn Hansen
• Craig Hanson
• Derek Duwayne Hanson
• Marilee Ann Hanson, MD

• Diagnostic Radiology Physician in Orange, CA
• Providers in Orange, CA by specialty
• Diagnostic Radiology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 20, 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.