David A. Dalessio, MD
NPI 1871558817ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Durham, NC
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in Durham, North Carolina, trained at University of Wisconsin School of Medicine (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $210,049 for 559 claims, against $11,836 paid for services in 2024. Eli Lilly and Company was the largest of 3 companies reporting payments in 2025, $86,139 in all, mostly consulting fees.
Overview
| NPI | 1871558817 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 20, 2006 |
| Last updated in NPPES | Jun 20, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 2014-00858 | NC |
| Internal Medicine | 207R00000X | 35-077498 | OH |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | 35-077498 | OH |
| Internal Medicine | 207R00000X | 2014-00858 | 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 - Internal Medicine (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 206 across 13 procedure codes |
| Paid by Medicare | $11,836 |
Part D prescriptions in 2024
| Prescriptions (claims) | 559 · 1,152 30-day fills |
|---|---|
| Patients | 147 |
| Total drug cost | $210,049 |
| Generic share | 51% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Duke Health Integrated Practice, IncDurham, NC · 3,185 clinicians
Hospital affiliation
- Duke University HospitalDurham, NC
Industry payments (Open Payments)
- 2025$86,139 · 18 payments from 3 companies
- 2024$45,577 · 62 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Eli Lilly and Company | $78,764 | 15 |
| Lilly USA, LLC | $6,125 | 1 |
| Vertex Pharmaceuticals Incorporated | $1,250 | 2 |
What the 2025 payments were for
- Consulting Fee$75,300 · 14 payments
- Travel and Lodging$10,839 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other endocrinologists in Durham
- 1093928376
- 1114423704
- 1235489774
- 1316248727
- 1336326131
- 1659364750
- 1669836094
- 1679216519
- 1710935838
- 1821105107
- 1982876892
- 1992967863
All 45 endocrinologists in Durham · All endocrinologists in North Carolina