Clayton Aldon Alfonso, MD
NPI 1790028843ActiveIndividual· Obstetrics & Gynecology· Durham, NC
Obstetrics & Gynecology (MD) with Duke Health Integrated Practice, Inc, practicing in Durham, North Carolina. Their prescriptions cost Medicare Part D more than their services did: $7,639 for 57 claims, against $3,992 paid for services in 2024. Lilly USA, LLC reported $67.57 in payments in 2025, mostly food and beverage. Lists Duke University Hospital as a hospital affiliation.
Overview
| NPI | 1790028843 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 27, 2013 |
| Last updated in NPPES | Jul 24, 2026 |
| Certified by provider | Jul 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 201602541 | NC |
| Obstetrics & Gynecology | 207V00000X | 0101278958 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (NC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 21 |
|---|---|
| Services billed | 35 across 18 procedure codes |
| Paid by Medicare | $3,992 |
Part D prescriptions in 2024
| Prescriptions (claims) | 57 · 121 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $7,639 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Duke Health Integrated Practice, IncDurham, NC · 3,185 clinicians
Hospital affiliation
- Duke University HospitalDurham, NC
Industry payments (Open Payments)
- 2025$67.57 · 1 payment from 1 company
- 2024$31.51 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $67.57 | 1 |
What the 2025 payments were for
- Food and Beverage$67.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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