Mark S. Shimko, MD
NPI 1457541278ActiveIndividual· Urology· Salisbury, MD
Urology (MD) in Salisbury, Maryland, trained at University of Maryland School of Medicine (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $5,255,060 for 2,254 claims, against $319,605 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 15 companies reporting payments in 2025, $1,027 in all, mostly food and beverage.
Overview
| NPI | 1457541278 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 27, 2007 |
| Last updated in NPPES | Jun 13, 2025 |
| Certified by provider | Jun 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Urology Primary | 208800000X | D0073462 | MD |
| Urology | 208800000X | C1-0009994 | DE |
| Urology | 208800000X | 50973 | MN |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Urology (DE); Practitioner - Urology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,144 |
|---|---|
| Services billed | 6,718 across 100 procedure codes |
| Paid by Medicare | $319,605 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,254 · 4,605 30-day fills |
|---|---|
| Patients | 551 |
| Total drug cost | $5,255,060 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Urology |
Medical group
- Chesapeake Urology Associates LLCGermantown, MD · 177 clinicians
Hospital affiliations
- Atlantic General HospitalBerlin, MD
- Beebe Medical CenterLewes, DE
- Riverside Shore Memorial HospitalOnancock, VA
- Tidalhealth Nanticoke, Inc.Seaford, DE
- Tidalhealth Peninsula Regional, IncSalisbury, MD
Industry payments (Open Payments)
- 2025$1,027 · 36 payments from 15 companies
- 2024$968.79 · 37 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $203.23 | 8 |
| Janssen Biotech, Inc. | $201.15 | 6 |
| Immunitybio, Inc. | $135.17 | 1 |
| Dendreon Pharmaceuticals LLC | $106.48 | 2 |
| Abbvie Inc. | $63.32 | 3 |
What the 2025 payments were for
- Food and Beverage$1,027 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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