David Diehl, M.D.
NPI 1487647897ActiveIndividual· Internal Medicine, Gastroenterology· Danville, PA
Internal Medicine, Gastroenterology (M.D.) in Danville, Pennsylvania, trained at Un of California, Irvine, College of Medicine (class of 1983). In 2024 Medicare paid $18,903 for 113 patients, and Part D covered 52 of their prescriptions, 85% of them generic. Olympus America Inc. was the largest of 11 companies reporting payments in 2025, $24,739 in all, mostly consulting fees.
Overview
| NPI | 1487647897 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 31, 2005 |
| Last updated in NPPES | Jun 12, 2020 |
| Certified by provider | Jun 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD430592 | 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 | 113 |
|---|---|
| Services billed | 218 across 37 procedure codes |
| Paid by Medicare | $18,903 |
Part D prescriptions in 2024
| Prescriptions (claims) | 52 · 63 30-day fills |
|---|---|
| Patients | 19 |
| Total drug cost | $961.06 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Un of California, Irvine, College of Medicine |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Gastroenterology |
Medical group
- Geisinger ClinicDanville, PA · 3,467 clinicians
Hospital affiliation
- Geisinger Medical CenterDanville, PA
Industry payments (Open Payments)
- 2025$24,739 · 36 payments from 11 companies
- 2024$7,733 · 27 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Olympus America Inc. | $20,447 | 19 |
| Merit Medical Systems Inc | $2,250 | 2 |
| Olympus Corporation | $825.00 | 1 |
| US Endoscopy | $500.00 | 1 |
| Cook Medical LLC | $223.23 | 6 |
What the 2025 payments were for
- Consulting Fee$18,425 · 10 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$3,850 · 2 payments
- Travel and Lodging$1,551 · 7 payments
- Food and Beverage$912.40 · 17 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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