Zachary D. Fleischner, MD
NPI 1104204189ActiveIndividual· Internal Medicine, Infectious Disease· Valhalla, NY
Internal Medicine, Infectious Disease (MD) with Arnot Ogden Medical Center and 1 other group, practicing in Valhalla, New York. Mostly services rather than prescriptions: Medicare paid $13,594 for 82 patients in 2024, with only 22 Part D claims. Gilead Sciences, Inc. was the largest of 2 companies reporting payments in 2024, $107.50 in all, mostly food and beverage. Lists Arnot Ogden Medical Center as a hospital affiliation.
Overview
| NPI | 1104204189 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 11, 2015 |
| Last updated in NPPES | Jul 15, 2020 |
| Certified by provider | Jul 15, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | 305966 | NY |
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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 82 |
|---|---|
| Services billed | 174 across 8 procedure codes |
| Paid by Medicare | $13,594 |
Part D prescriptions in 2024
| Prescriptions (claims) | 22 · 28 30-day fills |
|---|---|
| Patients | 11 |
| Total drug cost | $2,697 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
Medical groups
- Arnot Ogden Medical CenterHorseheads, NY · 216 clinicians
- Arnot Medical Services PLLCPainted Post, NY · 83 clinicians
Hospital affiliation
- Arnot Ogden Medical CenterElmira, NY
Industry payments (Open Payments)
- 2024$107.50 · 2 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $90.04 | 1 |
| Abbvie Inc. | $17.46 | 1 |
What the 2024 payments were for
- Food and Beverage$107.50 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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