Adam Christopher Niemann, MD
NPI 1780188292ActiveIndividual· Internal Medicine, Gastroenterology· Quincy, IL
Internal Medicine, Gastroenterology (MD) in Quincy, Illinois, trained at University of Michigan Medical School (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $43,371 for 101 claims, against $23,154 paid for services in 2024. Abbvie Inc. was the largest of 6 companies reporting payments in 2025, $424.02 in all, mostly food and beverage.
Overview
| NPI | 1780188292 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 20, 2018 |
| Last updated in NPPES | Sep 26, 2024 |
| Certified by provider | May 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036167091 | IL |
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 - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 118 |
|---|---|
| Services billed | 211 across 19 procedure codes |
| Paid by Medicare | $23,154 |
Part D prescriptions in 2024
| Prescriptions (claims) | 101 · 151 30-day fills |
|---|---|
| Patients | 42 |
| Total drug cost | $43,371 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Gastroenterology |
Medical groups
- Quincy Physicians and Surgeons Clinic, PLLCQuincy, IL · 223 clinicians
- Schuyler County Hospital DistrictRushville, IL · 45 clinicians
Hospital affiliations
- Blessing HospitalQuincy, IL
- Memorial HospitalCarthage, IL
- Sarah D Culbertson Memorial HospitalRushville, IL
- Southeast Iowa Regional Medical CenterWest Burlington, IA
Industry payments (Open Payments)
- 2025$424.02 · 23 payments from 6 companies
- 2024$161.68 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $324.56 | 17 |
| Janssen Biotech, Inc. | $31.82 | 2 |
| Madrigal Pharmaceuticals | $19.58 | 1 |
| Pfizer Inc. | $17.92 | 1 |
| Intercept Pharmaceuticals, Inc. | $15.18 | 1 |
What the 2025 payments were for
- Food and Beverage$424.02 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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