John F. Maciejczyk, M.D.
NPI 1639260102ActiveIndividual· Emergency Medicine· Danville, PA
Emergency Medicine (M.D.) in Danville, Pennsylvania, licensed in PA, with an NPI issued in September 2006. 235 Medicare patients in 2024, $32,798 paid; nearly all of their 133 Part D prescriptions were generic (98%). Amgen Inc. was the largest of 2 companies reporting payments in 2025, $31.05 in all, mostly food and beverage.
Overview
| NPI | 1639260102 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 27, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | MD429837 | PA |
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 - Emergency Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 434 across 13 procedure codes |
| Paid by Medicare | $32,798 |
Part D prescriptions in 2024
| Prescriptions (claims) | 133 · 133 30-day fills |
|---|---|
| Patients | 104 |
| Total drug cost | $1,922 |
| Generic share | 98% of claims |
Industry payments (Open Payments)
- 2025$31.05 · 2 payments from 2 companies
- 2024$19.53 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $16.28 | 1 |
| E.R. Squibb & Sons, L.L.C. | $14.77 | 1 |
What the 2025 payments were for
- Food and Beverage$31.05 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 84 emergency medicine physicians in Danville · All emergency medicine physicians in Pennsylvania