David W. Knorz, M.D.
NPI 1235153917ActiveIndividual· Anesthesiology· Williamsville, NY
Anesthesiology (M.D.) with Maple Gate Anesthesiologists, P.C., practicing in Williamsville, New York. Medicare paid $22,649 for services to 95 patients in 2024. Becton, Dickinson and Company was the largest of 7 companies reporting payments in 2025, $1,165 in all, mostly food and beverage. Lists Kaleida Health as a hospital affiliation.
Overview
| NPI | 1235153917 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 27, 2006 |
| Last updated in NPPES | Jul 9, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 201993-1 | NY |
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 - Anesthesiology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 134 across 42 procedure codes |
| Paid by Medicare | $22,649 |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Anesthesiology |
Medical group
- Maple Gate Anesthesiologists, P.C.Buffalo, NY · 116 clinicians
Hospital affiliation
- Kaleida HealthBuffalo, NY
Industry payments (Open Payments)
- 2025$1,165 · 26 payments from 7 companies
- 2024$383.70 · 15 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Becton, Dickinson and Company | $412.35 | 5 |
| Edwards Lifesciences Corporation | $358.25 | 12 |
| Octapharma USA, Inc. | $150.18 | 2 |
| Abiomed | $125.00 | 1 |
| Merck Sharp & Dohme LLC | $66.87 | 4 |
What the 2025 payments were for
- Food and Beverage$1,165 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 anesthesiologists in Williamsville · All anesthesiologists in New York