Alexander Charles Greff, PA-C
NPI 1578182564ActiveIndividual· Physician Assistant· Shiloh, IL
Physician Assistant (PA-C) with American Multispecialty Group Inc, practicing in Shiloh, Illinois. Their prescriptions cost Medicare Part D more than their services did: $312,107 for 441 claims, against $74,913 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 14 companies reporting payments in 2025, $984.19 in all, mostly food and beverage.
Overview
| NPI | 1578182564 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Apr 10, 2020 |
| Last updated in NPPES | Feb 16, 2022 |
| Certified by provider | Feb 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
| Physician Assistant | 363A00000X | 085.008210 | IL |
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 - Physician Assistant (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 91 |
|---|---|
| Services billed | 2,221 across 21 procedure codes |
| Paid by Medicare | $74,913 |
Part D prescriptions in 2024
| Prescriptions (claims) | 441 · 658 30-day fills |
|---|---|
| Patients | 92 |
| Total drug cost | $312,107 |
| Generic share | 64% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- American Multispecialty Group IncSaint Charles, MO · 116 clinicians
Industry payments (Open Payments)
- 2025$984.19 · 49 payments from 14 companies
- 2024$942.82 · 59 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $237.73 | 15 |
| Astrazeneca Pharmaceuticals LP | $136.22 | 9 |
| Novartis Pharmaceuticals Corporation | $106.42 | 1 |
| Csl Behring | $99.97 | 5 |
| Genzyme Corporation | $95.49 | 4 |
What the 2025 payments were for
- Food and Beverage$984.19 · 49 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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