Kathylynn C. Pietak, M.D.
NPI 1326013723ActiveIndividual· Internal Medicine· Amherst, NY
Internal Medicine (M.D.) in Amherst, New York, trained at State University of New York at Buffalo School of Medicine (class of 1991). Their prescriptions cost Medicare Part D more than their services did: $678,421 for 6,228 claims, against $25,430 paid for services in 2024. Pfizer Inc. was the largest of 5 companies reporting payments in 2025, $199.63 in all, mostly food and beverage.
Overview
| NPI | 1326013723 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 20, 2006 |
| Last updated in NPPES | Jul 21, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 200533 | 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 - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 95 |
|---|---|
| Services billed | 404 across 26 procedure codes |
| Paid by Medicare | $25,430 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,228 · 14,745 30-day fills |
|---|---|
| Patients | 490 |
| Total drug cost | $678,421 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | State University of New York at Buffalo School of Medicine |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Internal Medicine |
Medical groups
- Legacy Healthcare Services IncGreenville, SC · 3,223 clinicians
- Select PT, OT and Slp Rehabilitation Ny, PLLCHudson, NY · 301 clinicians
- Amherst Medical Associates, LLPAmherst, NY · 7 clinicians
Hospital affiliations
- Kaleida HealthBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Other facilities
- Amedisys Home Health Care (Amherst)Home health agency · Williamsville, NY
- Vna of Western Ny ChhaHome health agency · Cheektowaga, NY
Industry payments (Open Payments)
- 2025$199.63 · 11 payments from 5 companies
- 2024$95.26 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $54.35 | 3 |
| Amgen Inc. | $52.21 | 3 |
| Glaxosmithkline, LLC. | $37.75 | 2 |
| Novo Nordisk Inc | $36.72 | 2 |
| Lilly USA, LLC | $18.60 | 1 |
What the 2025 payments were for
- Food and Beverage$199.63 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 43 internal medicine physicians in Amherst · All internal medicine physicians in New York