Michael G. Guignon Jr., M.D.
NPI 1942542931ActiveIndividual· Internal Medicine· Shiloh, IL
Internal Medicine (M.D.) in Shiloh, Illinois, trained at Southern Illinois University School of Medicine (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $962,768 for 9,894 claims, against $90,572 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 8 companies reporting payments in 2025, $195.76 in all, mostly food and beverage.
Overview
| NPI | 1942542931 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 18, 2013 |
| Last updated in NPPES | Feb 19, 2021 |
| Certified by provider | Feb 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036140835 | IL |
| Hospitalist | 208M00000X | 036140835 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 301 |
|---|---|
| Services billed | 1,293 across 35 procedure codes |
| Paid by Medicare | $90,572 |
Part D prescriptions in 2024
| Prescriptions (claims) | 9,894 · 21,731 30-day fills |
|---|---|
| Patients | 638 |
| Total drug cost | $962,768 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Southern Illinois University School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Fairview Heights Medical Group SCAlton, IL · 444 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Hshs St Elizabeth's HospitalO Fallon, IL
- Memorial HospitalBelleville, IL
- St Joseph's HospitalHighland, IL
Other facilities
- Bjc Home Care ServicesHome health agency · Saint Louis, MO
- Elara Caring VHome health agency · Springfield, IL
- Hospice of Southern Illinois, IncHospice · Belleville, IL
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$195.76 · 11 payments from 8 companies
- 2024$1,804 · 121 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $48.96 | 3 |
| Lilly USA, LLC | $38.98 | 2 |
| Edwards Lifesciences Corporation | $27.15 | 1 |
| Abbvie Inc. | $17.17 | 1 |
| Glaxosmithkline, LLC. | $16.21 | 1 |
What the 2025 payments were for
- Food and Beverage$195.76 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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