Christopher F. Hannum, M.D.
NPI 1952465239ActiveIndividual· Internal Medicine· Chester, PA
Internal Medicine (M.D.) in Chester, Pennsylvania, trained at Js Weill Medical College, Cornell University (class of 1983). Their prescriptions cost Medicare Part D more than their services did: $638,278 for 6,581 claims, against $13,228 paid for services in 2024. Novo Nordisk Inc was the largest of 18 companies reporting payments in 2025, $1,148 in all, mostly food and beverage.
Overview
| NPI | 1952465239 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 20, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD032438E | 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 - Internal Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 67 |
|---|---|
| Services billed | 193 across 11 procedure codes |
| Paid by Medicare | $13,228 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,581 · 11,690 30-day fills |
|---|---|
| Patients | 319 |
| Total drug cost | $638,278 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Riddle Memorial HospitalMedia, PA
Industry payments (Open Payments)
- 2025$1,148 · 44 payments from 18 companies
- 2024$765.80 · 35 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $491.15 | 11 |
| Abbvie Inc. | $90.97 | 5 |
| Pfizer Inc. | $75.64 | 4 |
| Exact Sciences Corporation | $56.88 | 3 |
| Daiichi Sankyo Inc. | $48.97 | 2 |
What the 2025 payments were for
- Food and Beverage$1,148 · 44 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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