Quick answers
- Which hospitals does Geoffrey Sigmund work at?
- Medicare's official clinician data lists Geoffrey Sigmund at 5 hospitals: Garden Grove Hospital & Medical Center, Huntington Beach Hospital, Memorialcare Long Beach Medical Center, Saint Agnes Medical Center and West Anaheim Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Geoffrey Sigmund see patients?
- Medicare's clinician data lists 6 practice locations, including Anaheim, CA, Fresno, CA and Newport Beach, CA. Call before your visit to confirm the address.
- What is Geoffrey Sigmund's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology.
- Does Geoffrey Sigmund accept Medicare assignment?
- Yes. Medicare's clinician data says Geoffrey Sigmund 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 Geoffrey Sigmund?
- (714) 999-3847, as listed in official Medicare / NPI Registry data.
- What is Geoffrey Sigmund's NPI number?
- 1710152988. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Geoffrey Sigmund works
Medicare's Facility Affiliation Data lists Geoffrey Sigmund at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Garden Grove Hospital & Medical CenterGarden Grove, CA · Acute Care Hospital · CCN 050230
- Huntington Beach HospitalHuntington Beach, CA · Acute Care Hospital · CCN 050526
- Memorialcare Long Beach Medical CenterLong Beach, CA · Acute Care Hospital · CCN 050485
- Saint Agnes Medical CenterFresno, CA · Acute Care Hospital · CCN 050093
- West Anaheim Medical CenterAnaheim, CA · Acute Care Hospital · CCN 050426
Practice locations
Addresses where Geoffrey Sigmund is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1111 W La Palma AveAnaheim, CA 92801 (714) 999‑3847
- 1510 E Herndon Ave, Suite 110Fresno, CA 93720 (559) 450‑6742
- 1605 Avocado AveNewport Beach, CA 92660 (949) 760‑3025
- 17772 Beach BlvdHuntington Beach, CA 92647 (714) 843‑5000
- 2801 Atlantic AveLong Beach, CA 90806 (562) 933‑1554
Group practices
Medicare enrollment lists Geoffrey Sigmund as a member of these groups (CMS data updated 2026-10-02).
- Memorialcare Medical Foundation566 clinicians in the group
- Saint Agnes Medical Foundation161 clinicians in the group
- Coastal Imaging and Intervention Inc10 clinicians in the group
- Newport Diagnostic Radiology Inc9 clinicians in the group
- Newport Diagnostic Center Inc8 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1710152988 |
| 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