Nathaniel C. Knackstedt, DO
NPI 1023050952ActiveIndividual· Internal Medicine· Hoisington, KS
Internal Medicine (DO) in Hoisington, Kansas, trained at Kansas City University of Med & Biosciences, College of Osteo Med (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $948,831 for 13,810 claims, against $8,060 paid for services in 2024. Amgen Inc. was the largest of 4 companies reporting payments in 2025, $83.67 in all, mostly food and beverage.
Overview
| NPI | 1023050952 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Mar 2, 2023 |
| Certified by provider | Mar 2, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 05-30779 | KS |
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 - Internal Medicine (KS) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 57 |
|---|---|
| Services billed | 139 across 4 procedure codes |
| Paid by Medicare | $8,060 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,810 · 21,013 30-day fills |
|---|---|
| Patients | 462 |
| Total drug cost | $948,831 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Kansas City University of Med & Biosciences, College of Osteo Med |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Internal Medicine |
Medical group
- The Clara Barton Hospital Association Inc Hoisington KansasHoisington, KS · 37 clinicians
Hospital affiliations
- Clara Barton HospitalHoisington, KS
- Hays Medical CenterHays, KS
- Rush County Memorial HospitalLa Crosse, KS
- Russell Regional HospitalRussell, KS
- University of Ks Hlth System Great Bend CampusGreat Bend, KS
Other facilities
- Angels Care Home Health of Dodge CityHome health agency · Wa Keeney, KS
- Good Samaritan Home Health of Central KansasHome health agency · Hays, KS
- GentivaHospice · Wichita, KS
- Azria Health Great BendNursing home · Great Bend, KS
- Medicalodges Great BendNursing home · Great Bend, KS
Industry payments (Open Payments)
- 2025$83.67 · 5 payments from 4 companies
- 2024$167.18 · 10 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $31.64 | 2 |
| Alexion Pharmaceuticals, Inc. | $19.56 | 1 |
| Pfizer Inc. | $16.31 | 1 |
| Novartis Pharmaceuticals Corporation | $16.16 | 1 |
What the 2025 payments were for
- Food and Beverage$83.67 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records