Stanley R. Michalski, M.D.
NPI 1386649721ActiveIndividual· Internal Medicine, Rheumatology· Williamsville, NY
Internal Medicine, Rheumatology (M.D.) in Williamsville, New York, licensed in NY, with an NPI issued in June 2005. Their prescriptions cost Medicare Part D more than their services did: $1,683,952 for 5,256 claims, against $17,776 paid for services in 2024. Pfizer Inc. was the largest of 7 companies reporting payments in 2025, $331.09 in all, mostly food and beverage.
Overview
| NPI | 1386649721 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 14, 2005 |
| Last updated in NPPES | Aug 19, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 108355 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Rheumatology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 102 |
|---|---|
| Services billed | 434 across 31 procedure codes |
| Paid by Medicare | $17,776 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,256 · 8,957 30-day fills |
|---|---|
| Patients | 397 |
| Total drug cost | $1,683,952 |
| Generic share | 86% of claims |
Industry payments (Open Payments)
- 2025$331.09 · 15 payments from 7 companies
- 2024$1,527 · 76 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $94.17 | 5 |
| Astrazeneca Pharmaceuticals LP | $52.83 | 2 |
| Abbvie Inc. | $48.52 | 2 |
| Biocryst US Sales Co., LLC | $41.86 | 2 |
| Amgen Inc. | $39.97 | 2 |
What the 2025 payments were for
- Food and Beverage$331.09 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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