Diana Dickson-Witmer, M.D.
NPI 1932189131ActiveIndividual· Specialist· Wilmington, DE
Specialist (M.D.) in Wilmington, Delaware, trained at University of Florida College of Medicine (class of 1976). 364 Medicare patients in 2024, $116,885 paid; nearly all of their 250 Part D prescriptions were generic (99%). Stemline Therapeutics Inc. was the largest of 5 companies reporting payments in 2025, $231.67 in all, mostly food and beverage.
Overview
| NPI | 1932189131 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 23, 2006 |
| Last updated in NPPES | Nov 29, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | C1-0002159 | DE |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 364 |
|---|---|
| Services billed | 798 across 42 procedure codes |
| Paid by Medicare | $116,885 |
Part D prescriptions in 2024
| Prescriptions (claims) | 250 · 330 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $2,877 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Florida College of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | General Surgery |
Medical group
- Beebe Physician Network Inc.Rehoboth Beach, DE · 310 clinicians
Hospital affiliations
- Atlantic General HospitalBerlin, MD
- Beebe Medical CenterLewes, DE
Industry payments (Open Payments)
- 2025$231.67 · 5 payments from 5 companies
- 2024$234.53 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stemline Therapeutics Inc. | $123.46 | 1 |
| Daiichi Sankyo Inc. | $29.97 | 1 |
| Menarini Silicon Biosystems, Inc. | $28.35 | 1 |
| Novartis Pharmaceuticals Corporation | $27.00 | 1 |
| Myriad Genetic Laboratories, Inc. | $22.89 | 1 |
What the 2025 payments were for
- Food and Beverage$231.67 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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