Mark P. Bryer, MD
NPI 1144217324ActiveIndividual· Radiology, Radiation Oncology· Columbia, MO
Radiology, Radiation Oncology (MD) in Columbia, Missouri, trained at Perelman School of Med at the University of Pennsylvania (class of 1986). 537 Medicare patients in 2024, $476,296 paid; nearly all of their 404 Part D prescriptions were generic (95%). Janssen Biotech, Inc. was the largest of 36 companies reporting payments in 2025, $3,147 in all, mostly food and beverage.
Overview
| NPI | 1144217324 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 3, 2005 |
| Last updated in NPPES | Jan 31, 2025 |
| Certified by provider | Jan 31, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | 102993 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Radiation Oncology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 537 |
|---|---|
| Services billed | 3,750 across 46 procedure codes |
| Paid by Medicare | $476,296 |
Part D prescriptions in 2024
| Prescriptions (claims) | 404 · 573 30-day fills |
|---|---|
| Patients | 147 |
| Total drug cost | $6,537 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Radiation Oncology |
Medical groups
- Lake Regional Health SystemOsage Beach, MO · 138 clinicians
- Missouri Cancer Associates LLCColumbia, MO · 22 clinicians
Hospital affiliations
- Boone Hospital CenterColumbia, MO
- Lake Regional Health SystemOsage Beach, MO
Industry payments (Open Payments)
- 2025$3,147 · 134 payments from 36 companies
- 2024$3,151 · 152 payments from 36 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $374.82 | 17 |
| Astrazeneca Pharmaceuticals LP | $325.25 | 14 |
| Pfizer Inc. | $233.43 | 14 |
| Novocure Inc. | $206.78 | 3 |
| Daiichi Sankyo Inc. | $197.49 | 8 |
What the 2025 payments were for
- Food and Beverage$3,079 · 133 payments
- Education$68.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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