Christina Elizabeth Lankhorst, MD
NPI 1134336340ActiveIndividual· Internal Medicine, Nephrology· Sioux Falls, SD
Internal Medicine, Nephrology (MD) in Sioux Falls, South Dakota, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2004). 688 Medicare patients in 2024, $158,893 paid; nearly all of their 853 Part D prescriptions were generic (96%). Travere Therapeutics, Inc. was the largest of 11 companies reporting payments in 2025, $402.76 in all, mostly food and beverage.
Overview
| NPI | 1134336340 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 17, 2007 |
| Last updated in NPPES | Jan 21, 2025 |
| Certified by provider | Jan 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 39221 | IA |
| Internal Medicine | 207R00000X | 57012681 | OH |
| Internal Medicine, Hypertension Specialist | 207RH0005X | 7770 | SD |
| Internal Medicine, Nephrology | 207RN0300X | 53610 | MN |
| Internal Medicine, Nephrology | 207RN0300X | 7770 | SD |
| Internal Medicine | 207R00000X | 35090158 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (MN); Practitioner - Nephrology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 688 |
|---|---|
| Services billed | 1,888 across 24 procedure codes |
| Paid by Medicare | $158,893 |
Part D prescriptions in 2024
| Prescriptions (claims) | 853 · 1,910 30-day fills |
|---|---|
| Patients | 207 |
| Total drug cost | $24,220 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
- Sanford Health NetworkTracy, MN · 351 clinicians
- Sanford ClinicSioux Falls, SD · 268 clinicians
Hospital affiliations
- Community Memorial HospitalBurke, SD
- Ortonville Area Health ServicesOrtonville, MN
- Sanford Luverne Medical CenterLuverne, MN
- Sanford Medical Center AberdeenAberdeen, SD
- Sanford Usd Medical CenterSioux Falls, SD
Other facilities
- Davita Moccasin Creek DialysisDialysis facility · Aberdeen, SD
- Davita Sioux Falls Community DialysisDialysis facility · Sioux Falls, SD
- Sanford Health - Dialysis UnitDialysis facility · Sioux Falls, SD
- Sanford Usd Medical Ctr - HemodialysisDialysis facility · Sioux Falls, SD
Industry payments (Open Payments)
- 2025$402.76 · 18 payments from 11 companies
- 2024$165.54 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $87.05 | 4 |
| Novartis Pharmaceuticals Corporation | $76.72 | 3 |
| Calliditas Therapeutics US Inc. | $57.59 | 2 |
| Ardelyx, Inc. | $34.71 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $27.32 | 1 |
What the 2025 payments were for
- Food and Beverage$402.76 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Nephrology providers in South Dakota →