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Cardiac Surgery

Stephane Leung Wai Sang, MD

Works at hospitals in Battle Creek, MI · Fremont, MI · Ludington, MI … · Michigan

Summary

Dr. Stephane Leung Wai Sang, MD is a cardiac surgeon at 100 Michigan Ave NE, Grand Rapids, MI 49503. Phone: (616) 267-0115. Accepts Medicare assignment. In 2024, Stephane Leung Wai Sang had 104 Original Medicare patients and 201 services. NPI 1366859985. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Stephane Leung Wai Sang, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Stephane Leung Wai Sang accept Medicare assignment?
Yes. Medicare's clinician data says Stephane Leung Wai Sang 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 Stephane Leung Wai Sang see?
In 2024, CMS data shows 104 Original Medicare patients and 201 services for Stephane Leung Wai Sang. This counts Original Medicare only and measures volume, not quality.
What is Stephane Leung Wai Sang's NPI number?
1366859985. 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 Stephane Leung Wai Sang, 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 patients104
Services billed to Medicare201
Different services or procedures33
Participating Medicare providerYes
Average age of these patients77

Most frequent services

  1. Replacement of aortic valve through the skin and femoral artery (33361)25 services
  2. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)25 services
  3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)24 services
  4. X-ray of chest, 2 views (71046)15 services
  5. Placement and subsequent removal of device to protect brain from embolism through catheter using imaging guidance (33370)14 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%
  • Ischemic heart disease75%
  • Heart failure75%
  • Arthritis56%
  • Chronic kidney disease52%

Hospitals where Stephane Leung Wai Sang works

Medicare's Facility Affiliation Data lists Stephane Leung Wai Sang 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.

Practice locations

Addresses where Stephane Leung Wai Sang is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Stephane Leung Wai Sang as a member of this group (CMS data updated October 2, 2026).

  • Spectrum Health Primary Care Partners2,294 clinicians in the group

Specialties

Find other Cardiac Surgery doctors in Michigan →

Other cardiac surgeons in Michigan

Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.

All cardiac surgeons in Michigan →

Other clinicians in Spectrum Health Primary Care Partners

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2008 (18 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1366859985
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians