Quick answers
- Does Oren Zaidel accept Medicare assignment?
- Yes. Medicare's clinician data says Oren Zaidel 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 Oren Zaidel see?
- In 2024, CMS data shows 750 Original Medicare patients and 3,770 services for Oren Zaidel. This counts Original Medicare only and measures volume, not quality.
- What is Oren Zaidel's NPI number?
- 1689602195. 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 Oren Zaidel, 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 | 750 |
|---|---|
| Services billed to Medicare | 3,770 |
| Different services or procedures | 38 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Pathology examination of tissue using a microscope, intermediate complexity (88305)666 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)403 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)211 services
- Biopsy of large bowel using a flexible endoscope (45380)163 services
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)148 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 cholesterol75%
- High blood pressure69%
- Arthritis43%
- Diabetes28%
- Ischemic heart disease24%
- Anxiety21%
Hospitals where Oren Zaidel works
Medicare's Facility Affiliation Data lists Oren Zaidel 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.
- Providence Little Company of Mary Medical Center TorranceTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050353
- Torrance Memorial Medical CenterTorrance, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050351
Practice locations
Addresses where Oren Zaidel is enrolled with Medicare (CMS data updated October 2, 2026).
- 23456 Hawthorne Blvd, Suite 300Torrance, CA 90505 (310) 539‑2055
Group practices
Medicare enrollment lists Oren Zaidel as a member of this group (CMS data updated October 2, 2026).
- South Bay Gastroenterology Medical Group12 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Torrance
Clinicians with the same Medicare primary specialty in Torrance, CA — not a recommendation.
Other clinicians in South Bay Gastroenterology Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1689602195 |
| 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