Chris T. Derk, MD
NPI 1609899210ActiveIndividual· Internal Medicine, Rheumatology· Philadelphia, PA
Internal Medicine, Rheumatology (MD) in Philadelphia, Pennsylvania, trained at Jefferson Medical College of Thomas Jefferson University (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $1,079,345 for 1,524 claims, against $42,462 paid for services in 2024. Astrazeneca Uk Limited was the largest of 4 companies reporting payments in 2025, $33,252 in all, mostly consulting fees.
Overview
| NPI | 1609899210 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 25, 2006 |
| Last updated in NPPES | Nov 23, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | MD060853L | PA |
| Internal Medicine | 207R00000X | MD060853L | PA |
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 - Rheumatology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 224 |
|---|---|
| Services billed | 677 across 15 procedure codes |
| Paid by Medicare | $42,462 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,524 · 2,249 30-day fills |
|---|---|
| Patients | 207 |
| Total drug cost | $1,079,345 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Rheumatology |
| Telehealth | Offers telehealth |
Medical group
- University of Penn - Medical GroupPhiladelphia, PA · 3,505 clinicians
Hospital affiliations
- Chester County HospitalWest Chester, PA
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Penn Presbyterian Medical CenterPhiladelphia, PA
- Pennsylvania HospitalPhiladelphia, PA
- Shore Medical CenterSomers Point, NJ
Industry payments (Open Payments)
- 2025$33,252 · 10 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Uk Limited | $32,200 | 7 |
| Zoll Medical Corporation | $508.33 | 1 |
| Vertex Pharmaceuticals Incorporated | $425.00 | 1 |
| E.R. Squibb & Sons, L.L.C. | $119.04 | 1 |
What the 2025 payments were for
- Consulting Fee$33,133 · 9 payments
- Food and Beverage$119.04 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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