Quick answers
- Does Gail P. Ishiyama accept Medicare assignment?
- Yes. Medicare's clinician data says Gail P. Ishiyama 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 Gail P. Ishiyama see?
- In 2024, CMS data shows 344 Original Medicare patients and 1,329 services for Gail P. Ishiyama. This counts Original Medicare only and measures volume, not quality.
- What is Gail P. Ishiyama's NPI number?
- 1639194038. 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 Gail P. Ishiyama, 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 | 344 |
|---|---|
| Services billed to Medicare | 1,329 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Evaluation and testing for balance with recording (92540)200 services
- Use of electrodes during balance testing (92547)200 services
- Test for abnormal eye movement using a rotating chair (92546)199 services
- Vemp testing of lower branch of inner ear nerve with interpretation and report (92517)198 services
- Test to assess balance during warm and cool irrigation in both ears (92537)190 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 pressure67%
- Arthritis58%
- Anxiety31%
- Ischemic heart disease30%
- Depression30%
Hospitals where Gail P. Ishiyama works
Medicare's Facility Affiliation Data lists Gail P. Ishiyama 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.
- Ronald Reagan UCLA Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050262
- Santa Monica - UCLA Medical Center & Orthopaedic HospitalSanta Monica, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050112
- UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050481
Practice locations
Addresses where Gail P. Ishiyama is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 100 Medical Plz, Suite 425Los Angeles, CA 90095 (310) 794‑1500
- 10833 Le Conte AveLos Angeles, CA 90095
- 150 Medical PlzLos Angeles, CA 90095 (310) 825‑9989
- 200 Medical Plaza, Suite 550Los Angeles, CA 90024 (310) 794‑1110
- 200 UCLA Medical Plz, Suite 120Los Angeles, CA 90095 (310) 206‑6931
Group practices
Medicare enrollment lists Gail P. Ishiyama as a member of these groups (CMS data updated October 2, 2026).
- The Regents of the University of California97 clinicians in the group
- The Regents of the University of California34 clinicians in the group
Specialties
- Neurologyprimary
- Neurosurgeryalso
Other neurologists in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in The Regents of the University of California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | University Of California, Geffen School Of Medicine |
|---|---|
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639194038 |
| 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