Andrew Sean McKnight, MD
NPI 1639161573ActiveIndividual· Allergy & Immunology· Henderson, NV
Allergy & Immunology (MD) in Henderson, Nevada, licensed in NV, with an NPI issued in August 2005. In 2024 Medicare paid $144,691 for 171 patients, and Part D covered 236 of their prescriptions, 56% of them generic. Genzyme Corporation was the largest of 2 companies reporting payments in 2025, $165.42 in all, mostly food and beverage.
Overview
| NPI | 1639161573 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 17, 2005 |
| Last updated in NPPES | Oct 30, 2023 |
| Certified by provider | Oct 30, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | 10796 | NV |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 171 |
|---|---|
| Services billed | 6,988 across 18 procedure codes |
| Paid by Medicare | $144,691 |
Part D prescriptions in 2024
| Prescriptions (claims) | 236 · 310 30-day fills |
|---|---|
| Patients | 67 |
| Total drug cost | $143,938 |
| Generic share | 56% of claims |
Industry payments (Open Payments)
- 2025$165.42 · 2 payments from 2 companies
- 2024$839.41 · 40 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $109.43 | 1 |
| Sanofi-Aventis U.S. LLC | $55.99 | 1 |
What the 2025 payments were for
- Food and Beverage$109.43 · 1 payment
- Education$55.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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