David Wayne Riem Jr., MD
Hospitalist (MD) in Jackson, Mississippi, trained at University of Mississippi School of Medicine (class of 2018). In 2024 Medicare paid $52,625 for 185 patients, and Part D covered 316 of their prescriptions, 89% of them generic. Pfizer Inc. was the largest of 6 companies reporting payments in 2025, $261.29 in all, mostly food and beverage. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1255829453 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 24, 2018 |
| Last updated in NPPES | Aug 16, 2021 |
| Certified by provider | Jul 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 28925 | MS |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Mississippi, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | David W. Riem · Nurse/Nurses Aide | 1128b4 | Oct 20, 2005 | Hernando, MS |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | Possible (name) | See above |
| 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 (MS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 185 |
|---|---|
| Services billed | 716 across 9 procedure codes |
| Paid by Medicare | $52,625 |
Part D prescriptions in 2024
| Prescriptions (claims) | 316 · 392 30-day fills |
|---|---|
| Patients | 87 |
| Total drug cost | $14,316 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Mississippi School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Internal Medicine |
Medical group
- State of Mississippi - University of Mississippi Medical CenterJackson, MS · 965 clinicians
Hospital affiliation
- University of Mississippi Med CenterJackson, MS
Industry payments (Open Payments)
- 2025$261.29 · 12 payments from 6 companies
- 2024$290.81 · 15 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $64.56 | 3 |
| Abbvie Inc. | $62.49 | 3 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $42.49 | 2 |
| Mallinckrodt Hospital Products Inc. | $37.94 | 2 |
| Alexion Pharmaceuticals, Inc. | $34.75 | 1 |
What the 2025 payments were for
- Food and Beverage$261.29 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 33 hospitalists in Jackson · All hospitalists in Mississippi