Quick answers
- Does Cheung K. Leung accept Medicare assignment?
- Yes. Medicare's clinician data says Cheung K. 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 Cheung K. Leung see?
- In 2024, CMS data shows 429 Original Medicare patients and 3,480 services for Cheung K. Leung. This counts Original Medicare only and measures volume, not quality.
- What is Cheung K. Leung's NPI number?
- 1427083112. 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 Cheung K. 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 | 429 |
|---|---|
| Services billed to Medicare | 3,480 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,150 services
- Blood test, lipids (cholesterol and triglycerides) (80061)714 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)307 services
- Hemoglobin a1c level (83036)271 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)197 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%
- Diabetes39%
- Arthritis38%
- Ischemic heart disease32%
- Chronic kidney disease26%
Hospitals where Cheung K. Leung works
Medicare's Facility Affiliation Data lists Cheung K. 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.
- Hazel Hawkins Memorial HospitalHollister, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051337
- Santa Clara Valley Medical CenterSan Jose, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050038
Practice locations
Addresses where Cheung K. Leung is enrolled with Medicare (CMS data updated October 2, 2026).
- 9360 No Name Uno, Suite 110Gilroy, CA 95020 (408) 848‑2525
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Washington University School Of Medicine |
| Graduation year | 1984 (42 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) | 1427083112 |
| 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