Karen Louise Krok, MD
NPI 1003983404ActiveIndividual· Internal Medicine, Gastroenterology· Hershey, PA
Internal Medicine, Gastroenterology (MD) in Hershey, Pennsylvania, trained at Perelman School of Med at the University of Pennsylvania (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $587,721 for 998 claims, against $34,877 paid for services in 2024. Gilead Sciences, Inc. was the largest of 8 companies reporting payments in 2025, $3,161 in all, mostly consulting fees.
Overview
| NPI | 1003983404 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 29, 2006 |
| Last updated in NPPES | Oct 17, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD422216 | PA |
| Internal Medicine, Hepatology | 207RI0008X | MD422216 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 250 |
|---|---|
| Services billed | 336 across 26 procedure codes |
| Paid by Medicare | $34,877 |
Part D prescriptions in 2024
| Prescriptions (claims) | 998 · 1,535 30-day fills |
|---|---|
| Patients | 162 |
| Total drug cost | $587,721 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- The Milton S Hershey Medical Center Physicians GroupHershey, PA · 1,623 clinicians
Hospital affiliations
- Gettysburg HospitalGettysburg, PA
- Milton S Hershey Medical CenterHershey, PA
- Penn State Health Holy Spirit Medical CenterCamp Hill, PA
- Penn State Health St. JosephReading, PA
- Wellspan York HospitalYork, PA
Industry payments (Open Payments)
- 2025$3,161 · 22 payments from 8 companies
- 2024$1,321 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $2,228 | 5 |
| Ipsen Biopharmaceuticals, Inc | $405.29 | 5 |
| Madrigal Pharmaceuticals | $251.03 | 2 |
| Mallinckrodt Hospital Products Inc. | $73.49 | 1 |
| Novo Nordisk Inc | $72.48 | 3 |
What the 2025 payments were for
- Consulting Fee$2,040 · 1 payment
- Food and Beverage$869.30 · 19 payments
- Travel and Lodging$219.15 · 1 payment
- Education$32.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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