Sally Knooihuizen, MD
NPI 1164943171ActiveIndividual· Internal Medicine, Gastroenterology· Lincoln, NE
Internal Medicine, Gastroenterology (MD) in Lincoln, Nebraska, trained at University of Nebraska College of Medicine (class of 2017). In 2024 Medicare paid $316,527 for 344 patients, and Part D covered 433 of their prescriptions, 76% of them generic. Janssen Biotech, Inc. was the largest of 15 companies reporting payments in 2025, $635.53 in all, mostly food and beverage.
Overview
| NPI | 1164943171 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 29, 2017 |
| Last updated in NPPES | Oct 16, 2023 |
| Certified by provider | Oct 16, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 35811 | NE |
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 (NE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 344 |
|---|---|
| Services billed | 14,633 across 53 procedure codes |
| Paid by Medicare | $316,527 |
Part D prescriptions in 2024
| Prescriptions (claims) | 433 · 584 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $65,262 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Gastroenterology |
Medical group
- Gastroenterology Specialties PCLincoln, NE · 51 clinicians
Hospital affiliations
- Bryan Medical CenterLincoln, NE
- Chi Health St. ElizabethLincoln, NE
- The Nebraska Medical CenterOmaha, NE
Industry payments (Open Payments)
- 2025$635.53 · 35 payments from 15 companies
- 2024$961.92 · 30 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $164.12 | 11 |
| Abbvie Inc. | $137.72 | 7 |
| Madrigal Pharmaceuticals | $66.13 | 3 |
| Genzyme Corporation | $38.66 | 2 |
| Celltrion USA Inc. | $33.00 | 2 |
What the 2025 payments were for
- Food and Beverage$635.53 · 35 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Lincoln
- 1770635104
- 1831182757
- 1942434659
- 1346234440
- 1477603199
- 1063406015
- 1780200238
- 1679776561
- 1184774812
- 1073757217
- 1831758986
- 1699935536
All Internal Medicine, Gastroenterology providers in Nebraska →