Craig Michael Greven, MD
NPI 1154304863ActiveIndividual· Ophthalmology· Winston Salem, NC
Ophthalmology (MD) in Winston Salem, North Carolina, trained at Wake Forest University School of Medicine (class of 1983). In 2024 Medicare paid $255,517 for 354 patients, and Part D covered 151 of their prescriptions, 64% of them generic. Alcon Vision LLC was the largest of 3 companies reporting payments in 2025, $1,227 in all, mostly travel and lodging.
Overview
| NPI | 1154304863 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 28, 2005 |
| Last updated in NPPES | Aug 20, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | 28497 | NC |
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 - Ophthalmology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 354 |
|---|---|
| Services billed | 3,510 across 24 procedure codes |
| Paid by Medicare | $255,517 |
Part D prescriptions in 2024
| Prescriptions (claims) | 151 · 284 30-day fills |
|---|---|
| Patients | 50 |
| Total drug cost | $11,282 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Wake Forest University School of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Ophthalmology |
Medical group
- Wake Forest University Health SciencesHigh Point, NC · 2,645 clinicians
Hospital affiliation
- North Carolina Baptist HospitalWinston-Salem, NC
Industry payments (Open Payments)
- 2025$1,227 · 6 payments from 3 companies
- 2024$585.87 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $957.66 | 4 |
| Abbvie Inc. | $148.59 | 1 |
| Apellis Pharmaceuticals, Inc. | $120.50 | 1 |
What the 2025 payments were for
- Travel and Lodging$666.26 · 2 payments
- Food and Beverage$560.49 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 62 ophthalmologists in Winston Salem · All ophthalmologists in North Carolina