Gregory Thomas Bismack, M.D.
NPI 1619293149ActiveIndividual· Internal Medicine· Effingham, IL
Internal Medicine (M.D.) in Effingham, Illinois, trained at Wayne State University School of Medicine (class of 2010). In 2024 Medicare paid $95,137 for 409 patients, and Part D covered 571 of their prescriptions, 85% of them generic. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $20.23 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1619293149 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 8, 2010 |
| Last updated in NPPES | Jun 22, 2026 |
| Certified by provider | Jun 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036.155470 | IL |
| Hospitalist | 208M00000X | 2022010983 | MO |
| Hospitalist | 208M00000X | 036155470 | IL |
| Internal Medicine | 207R00000X | 4301097035 | MI |
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 - Hospitalist (IL); Practitioner - Internal Medicine (MI); Practitioner - Hospitalist (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 409 |
|---|---|
| Services billed | 1,085 across 16 procedure codes |
| Paid by Medicare | $95,137 |
Part D prescriptions in 2024
| Prescriptions (claims) | 571 · 880 30-day fills |
|---|---|
| Patients | 241 |
| Total drug cost | $45,686 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 2010 |
| Medicare specialty | Hospitalist |
Medical groups
- Galen Inpatient Physicians PCHanford, CA · 1,077 clinicians
- Cep America-Illinois Hospitalists, LLPAlton, IL · 196 clinicians
- Ste Genevieve County Memorial HospitalSte Genevieve, MO · 71 clinicians
- Cep America - Illinois Snf LLPShiloh, IL · 8 clinicians
Hospital affiliations
- Hshs St Elizabeth's HospitalO Fallon, IL
- Osf Saint Anthony's Health CenterAlton, IL
- Ssm St Clare Health CenterFenton, MO
- St Joseph's HospitalHighland, IL
- Ste Genevieve County Memorial HospitalSainte Genevieve, MO
Industry payments (Open Payments)
- 2025$20.23 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $20.23 | 1 |
What the 2025 payments were for
- Food and Beverage$20.23 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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