Leigh C. Chao, MD
NPI 1922081348ActiveIndividual· Emergency Medicine· Saint Louis, MO
Emergency Medicine (MD) in Saint Louis, Missouri, trained at Saint Louis University School of Medicine (class of 1996). 206 Medicare patients in 2024, $31,313 paid; nearly all of their 80 Part D prescriptions were generic (93%).
Overview
| NPI | 1922081348 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 21, 2005 |
| Last updated in NPPES | Jul 14, 2025 |
| Certified by provider | Dec 9, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 112947 | MO |
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 - Internal Medicine (IL); Practitioner - Emergency Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 206 |
|---|---|
| Services billed | 245 across 13 procedure codes |
| Paid by Medicare | $31,313 |
Part D prescriptions in 2024
| Prescriptions (claims) | 80 · 80 30-day fills |
|---|---|
| Patients | 65 |
| Total drug cost | $1,471 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Saint Louis University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Emergency Medicine |
Medical groups
- Washington University Community Specialists LLCSaint Louis, MO · 105 clinicians
- Memorial HospitalChester, IL · 30 clinicians
- Alton-Griffin Emergency Group PCAlton, IL · 18 clinicians
Hospital affiliations
- Christian Hospital NortheastSaint Louis, MO
- Memorial HospitalChester, IL
- Osf Saint Anthony's Health CenterAlton, 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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All 439 emergency medicine physicians in Saint Louis · All emergency medicine physicians in Missouri