Quick answers
- Does Omar N. Kallas accept Medicare assignment?
- Yes. Medicare's clinician data says Omar N. Kallas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Omar N. Kallas see?
- In 2024, CMS data shows 3,226 Original Medicare patients and 40,179 services for Omar N. Kallas. This counts Original Medicare only and measures volume, not quality.
- What is Omar N. Kallas's NPI number?
- 1003201336. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Omar N. Kallas, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 3,226 |
|---|---|
| Services billed to Medicare | 40,179 |
| Different services or procedures | 166 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, gadoterate meglumine, 0.1 ml (A9575)34,140 services
- X-ray of chest, 1 view (71045)1,055 services
- Ct scan head or brain without contrast (70450)434 services
- Ct scan of abdomen and pelvis with contrast (74177)294 services
- Ct scan of upper spine without contrast (72125)221 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Diabetes44%
- Ischemic heart disease39%
- Chronic kidney disease39%
Hospitals where Omar N. Kallas works
Medicare's Facility Affiliation Data lists Omar N. Kallas at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Adventist Health BakersfieldBakersfield, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050455
- Adventist Health Simi ValleySimi Valley, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050236
- Glendale Adventist Medical CenterGlendale, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050239
- Palomar Health Downtown CampusEscondido, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050115
- Palomar Medical Center PowayPoway, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050636
Practice locations
Addresses where Omar N. Kallas is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 29; the Medicare profile lists all.
- 1441 Eastlake Ave, Suite 2424Los Angeles, CA 90089 (323) 442‑2582
- 1500 San Pablo StLos Angeles, CA 90033
- 1516 San Pablo StLos Angeles, CA 90033 (800) 872‑2273
- 1516 San Pablo St, Suite L3100Los Angeles, CA 90033 (800) 872‑2273
- 1520 San Pablo StLos Angeles, CA 90033 (800) 872‑2273
Group practices
Medicare enrollment lists Omar N. Kallas as a member of these groups (CMS data updated October 2, 2026).
- USC Care Medical Group Inc1,380 clinicians in the group
- Beverly Radiology Medical Group III328 clinicians in the group
- Desert Advanced Imaging Medical Center208 clinicians in the group
- Arch Health Partners Inc145 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in USC Care Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 (11 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003201336 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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