Constantine Dean Katsamakis, DO
NPI 1407906100ActiveIndividual· Internal Medicine, Cardiovascular Disease· Mattoon, IL
Internal Medicine, Cardiovascular Disease (DO) in Mattoon, Illinois, trained at Midwestern University, Chicago College of Osteopathic Med (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $1,535,272 for 7,225 claims, against $292,001 paid for services in 2024. Medtronic, Inc. was the largest of 7 companies reporting payments in 2025, $523.00 in all, mostly food and beverage.
Overview
| NPI | 1407906100 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jan 12, 2007 |
| Last updated in NPPES | Sep 16, 2026 |
| Certified by provider | Sep 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036107954 | IL |
| Internal Medicine, Interventional Cardiology | 207RI0011X | 036107954 | 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 - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 3,089 |
|---|---|
| Services billed | 7,752 across 83 procedure codes |
| Paid by Medicare | $292,001 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,225 · 17,066 30-day fills |
|---|---|
| Patients | 994 |
| Total drug cost | $1,535,272 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Midwestern University, Chicago College of Osteopathic Med |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Interventional Cardiology |
Medical group
- Sarah Bush Lincoln Health CenterAltamont, IL · 419 clinicians
Hospital affiliations
- Carle Foundation HospitalUrbana, IL
- Fayette County HospitalVandalia, IL
- Paris Community HospitalParis, IL
- Sarah Bush Lincoln Health CenterMattoon, IL
- St Anthonys Memorial HospitalEffingham, IL
Industry payments (Open Payments)
- 2025$523.00 · 25 payments from 7 companies
- 2024$905.11 · 21 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $150.79 | 7 |
| Pfizer Inc. | $142.86 | 8 |
| Amgen Inc. | $77.33 | 4 |
| Abbott Laboratories | $62.63 | 3 |
| Penumbra, Inc. | $60.25 | 1 |
What the 2025 payments were for
- Food and Beverage$462.75 · 24 payments
- Travel and Lodging$60.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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