Quick answers
- Does Vivien L. Leung accept Medicare assignment?
- Yes. Medicare's clinician data says Vivien L. 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 Vivien L. Leung see?
- In 2024, CMS data shows 70 Original Medicare patients and 116 services for Vivien L. Leung. This counts Original Medicare only and measures volume, not quality.
- What is Vivien L. Leung's NPI number?
- 1598928160. 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 Vivien L. 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 | 70 |
|---|---|
| Services billed to Medicare | 116 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)89 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)12 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%
- Diabetes75%
- High cholesterol69%
- Chronic kidney disease44%
- Arthritis31%
- Ischemic heart disease30%
Hospitals where Vivien L. Leung works
Medicare's Facility Affiliation Data lists Vivien L. 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.
- Bronxcare Hospital CenterBronx, NY · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 330009
Practice locations
Addresses where Vivien L. Leung is enrolled with Medicare (CMS data updated October 2, 2026).
- 1650 Grand ConcourseBronx, NY 10457 (718) 992‑7669
Group practices
Medicare enrollment lists Vivien L. Leung as a member of this group (CMS data updated October 2, 2026).
- Bronxcare Health System341 clinicians in the group
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in Bronx
Clinicians with the same Medicare primary specialty in Bronx, NY — not a recommendation.
Other clinicians in Bronxcare Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598928160 |
| 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