Quick answers
- Which hospitals does Lloyd E. Greaser Iii work at?
- Medicare's official clinician data lists Lloyd E. Greaser Iii at 5 hospitals: Kaiser Foundation Hospital - Downey, Kaiser Foundation Hospital - Los Angeles, Kaiser Foundation Hospital - West LA, Kaiser Foundation Hospital - Woodland Hills and Kaiser Foundation Hospital Fontana/Ontario. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lloyd E. Greaser Iii see patients?
- Medicare's clinician data lists 20 practice locations, including Baldwin Park, CA, Riverside, CA and San Dimas, CA. Call before your visit to confirm the address.
- What is Lloyd E. Greaser Iii's specialty?
- Medicare lists Interventional Radiology as the primary specialty, and also Diagnostic Radiology.
- Does Lloyd E. Greaser Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Lloyd E. Greaser Iii 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 Lloyd E. Greaser Iii?
- (626) 851-1011, as listed in official Medicare / NPI Registry data.
- What is Lloyd E. Greaser Iii's NPI number?
- 1003977372. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lloyd E. Greaser Iii works
Medicare's Facility Affiliation Data lists Lloyd E. Greaser Iii 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 - DowneyDowney, CA · Acute Care Hospital · CCN 050139
- Kaiser Foundation Hospital - Los AngelesLos Angeles, CA · Acute Care Hospital · CCN 050138
- Kaiser Foundation Hospital - West LALos Angeles, CA · Acute Care Hospital · CCN 050561
- Kaiser Foundation Hospital - Woodland HillsWoodland Hills, CA · Acute Care Hospital · CCN 050677
- Kaiser Foundation Hospital Fontana/OntarioFontana, CA · Acute Care Hospital · CCN 050140
Practice locations
Addresses where Lloyd E. Greaser Iii is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 20; the Medicare profile lists all.
- 1011 Balwin Park BlvdBaldwin Park, CA 91706 (626) 851‑1011
- 10800 Magnolia AveRiverside, CA 92505 (951) 353‑2000
- 1255 W Arrow HwySan Dimas, CA 91773 (909) 394‑2526
- 13652 Cantara StPanorama City, CA 91402 (818) 375‑2000
- 25821 Vermont AveHarbor City, CA 90710 (310) 325‑5111
Group practices
Medicare enrollment lists Lloyd E. Greaser Iii as a member of this group (CMS data updated 2026-10-02).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Interventional Radiologyprimary
- Diagnostic Radiologyalso
Other interventional radiologists in Baldwin Park
Clinicians with the same Medicare primary specialty in Baldwin Park, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003977372 |
| 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