Quick answers
- Does Cyril Y. Leung accept Medicare assignment?
- Yes. Medicare's clinician data says Cyril Y. Leung 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 Cyril Y. Leung see?
- In 2024, CMS data shows 637 Original Medicare patients and 6,058 services for Cyril Y. Leung. This counts Original Medicare only and measures volume, not quality.
- What is Cyril Y. Leung's NPI number?
- 1134254345. 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 Cyril Y. Leung, 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 | 637 |
|---|---|
| Services billed to Medicare | 6,058 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes (99458)1,467 services
- Management using the results of remote vital sign monitoring per calendar month, first 20 minutes (99457)1,322 services
- Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days (99454)1,298 services
- Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)451 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)435 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%
- Heart failure70%
- Diabetes68%
- Ischemic heart disease58%
- Chronic kidney disease47%
Hospitals where Cyril Y. Leung works
Medicare's Facility Affiliation Data lists Cyril Y. Leung 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.
- Memorialcare Long Beach Medical CenterLong Beach, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050485
- UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348
Practice locations
Addresses where Cyril Y. Leung is enrolled with Medicare (CMS data updated October 2, 2026).
- 1974 Santa Fe AveLong Beach, CA 90810 (562) 595‑9799
Group practices
Medicare enrollment lists Cyril Y. Leung as a member of this group (CMS data updated October 2, 2026).
- Regional Physicians Medical Group Inc7 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Long Beach
Clinicians with the same Medicare primary specialty in Long Beach, CA — not a recommendation.
Other clinicians in Regional Physicians Medical Group Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University School Of Medicine |
| Graduation year | 1987 (39 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) | 1134254345 |
| 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