Vivian Wai-Yin Lam, MD
NPI 1629421144ActiveIndividual· Internal Medicine, Critical Care Medicine· Oak Lawn, IL
Internal Medicine, Critical Care Medicine (MD) in Oak Lawn, Illinois, trained at University of Michigan Medical School (class of 2016). Medicare paid $38,580 for services to 136 patients in 2024.
Overview
| NPI | 1629421144 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 20, 2016 |
| Last updated in NPPES | Nov 6, 2024 |
| Certified by provider | Nov 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Critical Care Medicine Primary | 207RC0200X | 036.161275 | IL |
| Emergency Medicine | 207P00000X | 036.161275 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 136 |
|---|---|
| Services billed | 265 across 16 procedure codes |
| Paid by Medicare | $38,580 |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Emergency Medicine |
| Secondary specialties | Critical Care (Intensivists) |
Medical group
- Advocate Health and Hospitals CorporationChicago, IL · 3,118 clinicians
Hospital affiliation
- Advocate Christ Hospital & Medical CenterOak Lawn, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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