Lee Kien Yong, M.D.
NPI 1952538522ActiveIndividual· Internal Medicine, Infectious Disease· Saint Charles, MO
Internal Medicine, Infectious Disease (M.D.) with Infectious Diseases PC, practicing in Saint Charles, Missouri. Their prescriptions cost Medicare Part D more than their services did: $198,662 for 483 claims, against $98,439 paid for services in 2024. Lists Ssm Health Depaul Hospital St Louis and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1952538522 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 22, 2009 |
| Last updated in NPPES | Jul 19, 2021 |
| Certified by provider | Apr 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 2011001240 | MO |
| Internal Medicine, Infectious Disease | 207RI0200X | 036123437 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Infectious Disease (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 358 |
|---|---|
| Services billed | 22,854 across 15 procedure codes |
| Paid by Medicare | $98,439 |
Part D prescriptions in 2024
| Prescriptions (claims) | 483 · 605 30-day fills |
|---|---|
| Patients | 120 |
| Total drug cost | $198,662 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
Medical group
- Infectious Diseases PCSaint Louis, MO · 10 clinicians
Hospital affiliations
- Ssm Health Depaul Hospital St LouisBridgeton, MO
- Ssm Health Saint Louis University HospitalSaint Louis, MO
- Ssm St Joseph Health CenterSaint Charles, MO
- Ssm St Joseph Hospital WestLake Saint Louis, MO
Other facilities
- Ssm Health at Home Home Health-St. LouisHome health agency · Saint Louis, MO
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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