Quick answers
- Which hospitals does Robert G. Dionisio work at?
- Medicare's official clinician data lists Robert G. Dionisio at 1 hospital: Kaiser Foundation Hospital - Los Angeles. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert G. Dionisio see patients?
- Medicare's clinician data lists 4 practice locations, including Los Angeles, CA and Bellflower, CA. Call before your visit to confirm the address.
- What is Robert G. Dionisio's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Interventional Radiology.
- Does Robert G. Dionisio accept Medicare assignment?
- Yes. Medicare's clinician data says Robert G. Dionisio 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 Robert G. Dionisio?
- (323) 783-4011, as listed in official Medicare / NPI Registry data.
- What is Robert G. Dionisio's NPI number?
- 1629539754. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert G. Dionisio works
Medicare's Facility Affiliation Data lists Robert G. Dionisio at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA · Acute Care Hospital · CCN 050138
Practice locations
Addresses where Robert G. Dionisio is enrolled with Medicare (CMS data updated 2026-10-02).
- 4725 -4733 Sunset BlvdLos Angeles, CA 90027 (323) 783‑4011
- 4733 W Sunset BlvdLos Angeles, CA 90027 (213) 667‑4784
- 4867 W Sunset BlvdLos Angeles, CA 90027 (323) 783‑4011
- 9333 Rosecrans AveBellflower, CA 90706 (562) 461‑3000
Group practices
Medicare enrollment lists Robert G. Dionisio as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Interventional Radiologyalso
Other radiologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1629539754 |
| 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