David Asher Leiman, MD
NPI 1558596403ActiveIndividual· Student in an Organized Health Care Education/Training Program· Durham, NC
Student in an Organized Health Care Education/Training Program (MD) in Durham, North Carolina, trained at Vanderbilt University School of Medicine (class of 2009). 277 Medicare patients in 2024, $39,925 paid; nearly all of their 404 Part D prescriptions were generic (91%). Merck Sharp & Dohme LLC reported $304.60 in payments in 2025, mostly consulting fees.
Overview
| NPI | 1558596403 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 21, 2009 |
| Last updated in NPPES | Jul 6, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Student in an Organized Health Care Education/Training Program Primary | 390200000X | MT195507 | PA |
| Internal Medicine | 207R00000X | MT195507 | PA |
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 - Gastroenterology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 277 |
|---|---|
| Services billed | 505 across 41 procedure codes |
| Paid by Medicare | $39,925 |
Part D prescriptions in 2024
| Prescriptions (claims) | 404 · 937 30-day fills |
|---|---|
| Patients | 168 |
| Total drug cost | $41,880 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Vanderbilt University School of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Duke Health Integrated Practice, IncDurham, NC · 3,185 clinicians
Hospital affiliations
- Duke Regional HospitalDurham, NC
- Duke University HospitalDurham, NC
Industry payments (Open Payments)
- 2025$304.60 · 4 payments from 1 company
- 2024$1,911 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $304.60 | 4 |
What the 2025 payments were for
- Consulting Fee$227.50 · 1 payment
- Education$77.10 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 1,247 Student in an Organized Health Care Education/Training Program providers in Durham · All Student in an Organized Health Care Education/Training Program providers in North Carolina