Gregory Todd Greenwood, M.D.
NPI 1316946858ActiveIndividual· Internal Medicine, Nephrology· Winston-Salem, NC
Internal Medicine, Nephrology (M.D.) in Winston-Salem, North Carolina, trained at Wake Forest University School of Medicine (class of 1999). Their prescriptions cost Medicare Part D more than their services did: $923,093 for 3,855 claims, against $156,286 paid for services in 2024. Novo Nordisk Inc was the largest of 24 companies reporting payments in 2025, $225,635 in all, mostly speaking and faculty fees.
Overview
| NPI | 1316946858 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 18, 2005 |
| Last updated in NPPES | Aug 30, 2021 |
| Certified by provider | Aug 30, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 85296 | NC |
| Internal Medicine | 207R00000X | 85296 | NC |
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 - Nephrology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 461 |
|---|---|
| Services billed | 1,711 across 28 procedure codes |
| Paid by Medicare | $156,286 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,855 · 6,794 30-day fills |
|---|---|
| Patients | 431 |
| Total drug cost | $923,093 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Wake Forest University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- W Scott Moore Et Al PtrWinston Salem, NC · 12 clinicians
Hospital affiliations
- North Carolina Baptist HospitalWinston-Salem, NC
- Novant Health Forsyth Medical CenterWinston-Salem, NC
Other facilities
- Lexington Dialysis CenterDialysis facility · Lexington, NC
- Mount Airy Dialysis CenterDialysis facility · Mount Airy, NC
- Northside Dialysis CenterDialysis facility · Winston Salem, NC
- Piedmont Dialysis CenterDialysis facility · Winston Salem, NC
- Salem Kidney CenterDialysis facility · Winston Salem, NC
Industry payments (Open Payments)
- 2025$225,635 · 388 payments from 24 companies
- 2024$198,895 · 384 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $53,888 | 50 |
| Alexion Pharmaceuticals, Inc. | $44,620 | 62 |
| Lilly USA, LLC | $31,584 | 40 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $26,349 | 35 |
| Otsuka America Pharmaceutical, Inc. | $22,726 | 24 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$186,536 · 97 payments
- Travel and Lodging$20,250 · 103 payments
- Consulting Fee$7,715 · 2 payments
- Food and Beverage$5,834 · 183 payments
- Compensation for serving as faculty or as a speaker for a medical education program$5,300 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Winston-Salem
- 1215145735
- 1023017563
- 1407855968
All Internal Medicine, Nephrology providers in North Carolina →