William Dreas Lambert, MD
NPI 1285669507ActiveIndividual· Psychiatry & Neurology, Psychiatry· Greenwood, SC
Psychiatry & Neurology, Psychiatry (MD) in Greenwood, South Carolina, trained at Medical University of South Carolina College of Medicine (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $86,833 for 839 claims, against $11,781 paid for services in 2024.
Overview
| NPI | 1285669507 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 12, 2006 |
| Last updated in NPPES | Dec 10, 2021 |
| Certified by provider | Dec 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 36533 | 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 - Psychiatry (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 13 |
|---|---|
| Services billed | 183 across 3 procedure codes |
| Paid by Medicare | $11,781 |
Part D prescriptions in 2024
| Prescriptions (claims) | 839 · 1,395 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $86,833 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Medical group
- Self Medical GroupGreenwood, SC · 395 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 15 psychiatrists in Greenwood · All psychiatrists in South Carolina