Quick answers
- Which hospitals does Gemmy Hannsun work at?
- Medicare's official clinician data lists Gemmy Hannsun at 1 hospital: UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gemmy Hannsun see patients?
- Medicare's clinician data lists 8 practice locations, including Orange, CA, Menifee, CA and Rancho Mirage, CA. Call before your visit to confirm the address.
- What is Gemmy Hannsun's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Gemmy Hannsun accept Medicare assignment?
- Yes. Medicare's clinician data says Gemmy Hannsun accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Gemmy Hannsun?
- (714) 456-7004, as listed in official Medicare / NPI Registry data.
- What is Gemmy Hannsun's NPI number?
- 1992120026. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gemmy Hannsun works
Medicare's Facility Affiliation Data lists Gemmy Hannsun at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Gemmy Hannsun is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 101 the City Dr SOrange, CA 92868 (714) 456‑7004
- 230 S Main St, Suite 205Orange, CA 92868 (714) 288‑5400
- 27168 Newport Rd, Suite BMenifee, CA 92584 (951) 566‑5725
- 35800 Bob Hope Dr, Suite 150aRancho Mirage, CA 92270 (760) 770‑1920
- 415 Rolling Oaks Dr, Suite 125and160Thousand Oaks, CA 91361 (805) 778‑1513
Group practices
Medicare enrollment lists Gemmy Hannsun as a member of these groups (CMS data updated 2026-10-02).
- Beverly Radiology Medical Group III328 clinicians in the group
- Desert Advanced Imaging Medical Center208 clinicians in the group
- UC Regents108 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Orange
Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Davis School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992120026 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians