Quick answers
- Does Andrew O. Schreiber accept Medicare assignment?
- Yes. Medicare's clinician data says Andrew O. Schreiber 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 Andrew O. Schreiber see?
- In 2024, CMS data shows 74 Original Medicare patients and 1,265 services for Andrew O. Schreiber. This counts Original Medicare only and measures volume, not quality.
- What is Andrew O. Schreiber's NPI number?
- 1679662852. 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 Andrew O. Schreiber, 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 | 74 |
|---|---|
| Services billed to Medicare | 1,265 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)971 services
- Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)69 services
- Placement of skin electrodes and measurement of central motor stimulation in arms and legs (95939)64 services
- Needle measurement of electrical activity in arm or leg muscles, 4 extremities (95864)58 services
- Placement of skin electrodes and measurement of stimulated sites in trunk or head (95927)25 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%
- Arthritis75%
- Diabetes35%
- Ischemic heart disease34%
- Anxiety27%
Practice locations
Addresses where Andrew O. Schreiber is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 UCLA Medical Plz, Suite 460Los Angeles, CA 90024 (310) 443‑8999
- 1125 E 17th St, Suite E218Santa Ana, CA 92701 (949) 333‑1586
Group practices
Medicare enrollment lists Andrew O. Schreiber as a member of this group (CMS data updated October 2, 2026).
- Regents of the University of California140 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1979 (47 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679662852 |
| 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
- 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