Nihaal Prashant Karnik, MD
NPI 1407384852ActiveIndividual· Internal Medicine, Gastroenterology· Seattle, WA
Internal Medicine, Gastroenterology (MD) with Geisinger Clinic, practicing in Seattle, Washington. In 2024 Medicare paid $20,830 for 117 patients, and Part D covered 95 of their prescriptions, 88% of them generic. Ovesco Endoscopy USA, Inc. reported $874.07 in payments in 2025, mostly travel and lodging. Lists Geisinger Wyoming Valley Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1407384852 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 30, 2017 |
| Last updated in NPPES | Sep 29, 2023 |
| Certified by provider | Sep 29, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MD61414810 | WA |
| Internal Medicine | 207R00000X | MT213556 | 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 - Gastroenterology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 117 |
|---|---|
| Services billed | 202 across 41 procedure codes |
| Paid by Medicare | $20,830 |
Part D prescriptions in 2024
| Prescriptions (claims) | 95 · 115 30-day fills |
|---|---|
| Patients | 63 |
| Total drug cost | $2,620 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Geisinger ClinicDanville, PA · 3,467 clinicians
Hospital affiliations
- Geisinger Wyoming Valley Medical CenterWilkes Barre, PA
- Geisinger-Community Medical CenterScranton, PA
Industry payments (Open Payments)
- 2025$874.07 · 1 payment from 1 company
- 2024$12,522 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ovesco Endoscopy USA, Inc. | $874.07 | 1 |
What the 2025 payments were for
- Travel and Lodging$874.07 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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