Christine P. Lewis, M.D.
NPI 1659361723ActiveIndividual· Internal Medicine, Gastroenterology· Hagerstown, MD
Internal Medicine, Gastroenterology (M.D.) in Hagerstown, Maryland, trained at Howard University College of Medicine (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $164,664 for 1,994 claims, against $89,528 paid for services in 2024. Takeda Pharmaceuticals U.S.A., Inc. was the largest of 8 companies reporting payments in 2025, $249.00 in all, mostly food and beverage.
Overview
| NPI | 1659361723 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 28, 2005 |
| Last updated in NPPES | Mar 10, 2026 |
| Certified by provider | Mar 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | D54630 | MD |
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 - Gastroenterology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 515 |
|---|---|
| Services billed | 894 across 27 procedure codes |
| Paid by Medicare | $89,528 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,994 · 4,123 30-day fills |
|---|---|
| Patients | 502 |
| Total drug cost | $164,664 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Howard University College of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Gastroenterology |
Medical groups
- Medical Practices of Antietam, LLCHagerstown, MD · 234 clinicians
- Gastrointestinal Associates of Maryland PAWaldorf, MD · 8 clinicians
Hospital affiliation
- Meritus Medical CenterHagerstown, MD
Industry payments (Open Payments)
- 2025$249.00 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. | $66.83 | 3 |
| Pfizer Inc. | $50.92 | 2 |
| Ardelyx, Inc. | $31.79 | 1 |
| Qol Medical, LLC | $25.83 | 1 |
| Regeneron Healthcare Solutions, Inc. | $22.97 | 1 |
What the 2025 payments were for
- Food and Beverage$249.00 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 17 gastroenterologists in Hagerstown · All gastroenterologists in Maryland