Nicolas W. Shammas, M.D.
NPI 1922087857ActiveIndividual· Internal Medicine, Interventional Cardiology· Davenport, IA
Internal Medicine, Interventional Cardiology (M.D.) with Genesis Health System and 1 other group, practicing in Davenport, Iowa. Their prescriptions cost Medicare Part D more than their services did: $1,260,004 for 8,003 claims, against $477,096 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 11 companies reporting payments in 2025, $56,426 in all, mostly speaking and faculty fees. Lists Genesis Hlth System DBA Genesis Mdl Ctr-Illini and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1922087857 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 10, 2006 |
| Last updated in NPPES | Feb 10, 2021 |
| Certified by provider | Feb 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | 27303 | IA |
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 - Cardiovascular Disease (Cardiology) (IA); Practitioner - Interventional Cardiology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,774 |
|---|---|
| Services billed | 4,850 across 114 procedure codes |
| Paid by Medicare | $477,096 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,003 · 19,371 30-day fills |
|---|---|
| Patients | 1,026 |
| Total drug cost | $1,260,004 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical groups
- Genesis Health SystemDe Witt, IA · 224 clinicians
- Cardiovascular Medicine PLLCMoline, IL · 50 clinicians
Hospital affiliations
- Genesis Hlth System DBA Genesis Mdl Ctr-IlliniSilvis, IL
- Genesis Medical Center-DavenportDavenport, IA
- Mercyone Clinton Medical CenterClinton, IA
- Mercyone Genesis Dewitt Medical CenterDewitt, IA
- Trinity - BettendorfBettendorf, IA
Industry payments (Open Payments)
- 2025$56,426 · 45 payments from 11 companies
- 2024$47,695 · 59 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $33,664 | 17 |
| Angiodynamics, Inc. | $7,243 | 9 |
| Amgen Inc. | $7,205 | 7 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $5,815 | 3 |
| Lilly USA, LLC | $2,280 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$47,776 · 16 payments
- Consulting Fee$3,666 · 3 payments
- Travel and Lodging$3,039 · 6 payments
- Food and Beverage$1,946 · 20 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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