Douglas Rieth, M.D.
NPI 1225004229ActiveIndividual· Internal Medicine· Spartanburg, SC
Internal Medicine (M.D.) in Spartanburg, South Carolina, trained at Vanderbilt University School of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $1,252,990 for 9,381 claims, against $175,018 paid for services in 2024. Pfizer Inc. was the largest of 18 companies reporting payments in 2025, $1,009 in all, mostly food and beverage.
Overview
| NPI | 1225004229 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 28, 2006 |
| Last updated in NPPES | Dec 10, 2020 |
| Certified by provider | Dec 10, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 17565 | SC |
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 (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 393 |
|---|---|
| Services billed | 3,728 across 97 procedure codes |
| Paid by Medicare | $175,018 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,381 · 22,602 30-day fills |
|---|---|
| Patients | 515 |
| Total drug cost | $1,252,990 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
Medical group
- Spartanburg Medical CenterSpartanburg, SC · 1,078 clinicians
Hospital affiliations
- Advent Health PolkColumbus, NC
- Pelham Medical CenterGreer, SC
- Spartanburg Medical CenterSpartanburg, SC
Other facilities
- Amedisys Home Health of ClintonHome health agency · Clinton, SC
- Spartanburg Regional Home HealthHome health agency · Spartanburg, SC
Industry payments (Open Payments)
- 2025$1,009 · 54 payments from 18 companies
- 2024$1,523 · 95 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $195.48 | 12 |
| Astellas Pharma US Inc | $103.42 | 5 |
| Dexcom, Inc. | $92.17 | 3 |
| Novo Nordisk Inc | $88.29 | 6 |
| Verona Pharma, Inc. | $68.81 | 4 |
What the 2025 payments were for
- Food and Beverage$1,009 · 54 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 116 internal medicine physicians in Spartanburg · All internal medicine physicians in South Carolina