Gregory W. Niemer, M.D.
NPI 1356449367ActiveIndividual· Internal Medicine, Rheumatology· Summerville, SC
Internal Medicine, Rheumatology (M.D.) in Summerville, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 1995). In 2024 Medicare paid $1,460,300 for 698 patients, and Part D covered 3,000 of their prescriptions, 88% of them generic. American Rheumatology Network, LLC was the largest of 23 companies reporting payments in 2025, $1,291,306 in all, mostly acquisitions.
Overview
| NPI | 1356449367 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 21, 2006 |
| Last updated in NPPES | Jul 7, 2026 |
| Certified by provider | Jul 7, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 18631 | SC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 698 |
|---|---|
| Services billed | 112,694 across 72 procedure codes |
| Paid by Medicare | $1,460,300 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,000 · 5,199 30-day fills |
|---|---|
| Patients | 467 |
| Total drug cost | $1,617,534 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Rheumatology |
Medical group
- Articularis Healthcare Group IncAugusta, GA · 45 clinicians
Hospital affiliations
- Roper HospitalCharleston, SC
- Roper St Francis Hospital-Berkeley IncSummerville, SC
- Trident Medical CenterCharleston, SC
Industry payments (Open Payments)
- 2025$1,291,306 · 153 payments from 23 companies
- 2024$126,049 · 158 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| American Rheumatology Network, LLC | $1,275,000 | 1 |
| Abbvie Inc. | $13,024 | 21 |
| Amgen Inc. | $592.78 | 31 |
| Janssen Biotech, Inc. | $431.56 | 19 |
| Ucb, Inc. | $400.92 | 22 |
What the 2025 payments were for
- Acquisitions$1,275,000 · 1 payment
- Grant$12,584 · 2 payments
- Food and Beverage$3,667 · 149 payments
- Education$54.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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