Mark Fesen, MD
NPI 1639149545ActiveIndividual· Internal Medicine, Medical Oncology· Great Bend, KS
Internal Medicine, Medical Oncology (MD) in Great Bend, Kansas, trained at Rutgers New Jersey Medical School (class of 1987). In 2024 Medicare paid $3,791,130 for 672 patients, and Part D covered 1,536 of their prescriptions, 84% of them generic. Pfizer Inc. was the largest of 38 companies reporting payments in 2025, $2,735 in all, mostly food and beverage.
Overview
| NPI | 1639149545 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 24, 2006 |
| Last updated in NPPES | Oct 10, 2024 |
| Certified by provider | Oct 10, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 04-24425 | KS |
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 - Medical Oncology (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 672 |
|---|---|
| Services billed | 266,957 across 130 procedure codes |
| Paid by Medicare | $3,791,130 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,536 · 1,958 30-day fills |
|---|---|
| Patients | 199 |
| Total drug cost | $2,801,938 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Rutgers New Jersey Medical School |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Central Care PAEmporia, KS · 15 clinicians
Hospital affiliations
- Clara Barton HospitalHoisington, KS
- Ellsworth County Medical CenterEllsworth, KS
- Pawnee Valley Community HospitalLarned, KS
- Rush County Memorial HospitalLa Crosse, KS
- University of Ks Hlth System Great Bend CampusGreat Bend, KS
Industry payments (Open Payments)
- 2025$2,735 · 151 payments from 38 companies
- 2024$1,896 · 105 payments from 37 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $245.75 | 25 |
| Gilead Sciences, Inc. | $193.25 | 6 |
| Astrazeneca Pharmaceuticals LP | $161.10 | 8 |
| Abbvie Inc. | $142.07 | 9 |
| Janssen Biotech, Inc. | $138.69 | 12 |
What the 2025 payments were for
- Food and Beverage$2,635 · 150 payments
- Education$99.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records