Mark S. Shahin, MD
NPI 1568440451ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Hershey, PA
Obstetrics & Gynecology, Gynecologic Oncology (MD) in Hershey, Pennsylvania, trained at Northwestern University Feinberg Medical School (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $509,446 for 292 claims, against $203,697 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 21 companies reporting payments in 2025, $176,544 in all, mostly speaking and faculty fees.
Overview
| NPI | 1568440451 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 3, 2006 |
| Last updated in NPPES | Sep 15, 2025 |
| Certified by provider | Sep 15, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | MD073008L | PA |
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 - Gynecological Oncology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 235 |
|---|---|
| Services billed | 4,146 across 85 procedure codes |
| Paid by Medicare | $203,697 |
Part D prescriptions in 2024
| Prescriptions (claims) | 292 · 472 30-day fills |
|---|---|
| Patients | 100 |
| Total drug cost | $509,446 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Gynecological Oncology |
Medical groups
- The Milton S Hershey Medical Center Physicians GroupHershey, PA · 1,623 clinicians
- Alliance Cancer Specialists P.C.Sellersville, PA · 43 clinicians
Hospital affiliations
- Doylestown HospitalDoylestown, PA
- Milton S Hershey Medical CenterHershey, PA
- Penn State Health Hampden Medical CenterEnola, PA
- Penn State Health Holy Spirit Medical CenterCamp Hill, PA
- St Luke's Hospital - Grand View CampusSellersville, PA
Industry payments (Open Payments)
- 2025$176,544 · 181 payments from 21 companies
- 2024$170,886 · 188 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $94,555 | 67 |
| Merck Sharp & Dohme LLC | $34,184 | 28 |
| Abbvie Inc. | $26,505 | 21 |
| Corcept Therapeutics | $10,938 | 12 |
| Astrazeneca Pharmaceuticals LP | $6,309 | 10 |
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$122,298 · 31 payments
- Travel and Lodging$35,611 · 50 payments
- Consulting Fee$12,470 · 6 payments
- Food and Beverage$5,659 · 91 payments
- Education$507.18 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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