Mary Rui Yu, MD
NPI 1861807026ActiveIndividual· Emergency Medicine· Saint Louis, MO
Emergency Medicine (MD) with Emergency Services Midwest SC, practicing in Saint Louis, Missouri. 139 Medicare patients in 2024, $16,476 paid; nearly all of their 65 Part D prescriptions were generic (92%). Lists Memorial Hospital as a hospital affiliation.
Overview
| NPI | 1861807026 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 26, 2014 |
| Last updated in NPPES | Aug 10, 2021 |
| Certified by provider | Aug 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 2016011166 | 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 - Emergency Medicine (IL); Practitioner - Emergency Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 139 |
|---|---|
| Services billed | 148 across 14 procedure codes |
| Paid by Medicare | $16,476 |
Part D prescriptions in 2024
| Prescriptions (claims) | 65 · 65 30-day fills |
|---|---|
| Patients | 56 |
| Total drug cost | $453.55 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical group
- Emergency Services Midwest SCBelleville, IL · 37 clinicians
Hospital affiliation
- Memorial HospitalBelleville, 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