Arvin Lopez Santos, MD
NPI 1336363324ActiveIndividual· Internal Medicine, Nephrology· Sioux Falls, SD
Internal Medicine, Nephrology (MD) with Sanford Medical Center, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $269,606 for 6,463 claims, against $140,722 paid for services in 2024. Travere Therapeutics, Inc. was the largest of 13 companies reporting payments in 2025, $598.44 in all, mostly food and beverage. Lists Avera Queen of Peace and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1336363324 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 12, 2007 |
| Last updated in NPPES | Nov 20, 2021 |
| Certified by provider | Nov 20, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 7449 | SD |
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 - Nephrology (NE); Practitioner - Nephrology (SD); Practitioner - Neurology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 515 |
|---|---|
| Services billed | 2,169 across 24 procedure codes |
| Paid by Medicare | $140,722 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,463 · 13,543 30-day fills |
|---|---|
| Patients | 799 |
| Total drug cost | $269,606 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
Hospital affiliations
- Avera Queen of PeaceMitchell, SD
- Hendricks Community HospitalHendricks, MN
- Huron Regional Medical CenterHuron, SD
- Sanford Luverne Medical CenterLuverne, MN
- Sanford Usd Medical CenterSioux Falls, SD
Other facilities
- Carl T Curtis Health Ed Center DialysisDialysis facility · Macy, NE
- Carl T Curtis Health Ed Center Satellite ClinicDialysis facility · Walthill, NE
- 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$598.44 · 28 payments from 13 companies
- 2024$114.73 · 6 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Travere Therapeutics, Inc. | $137.95 | 8 |
| Calliditas Therapeutics US Inc. | $82.64 | 3 |
| Novartis Pharmaceuticals Corporation | $76.72 | 3 |
| Bayer Healthcare Pharmaceuticals Inc. | $57.58 | 2 |
| Otsuka America Pharmaceutical, Inc. | $44.26 | 2 |
What the 2025 payments were for
- Food and Beverage$598.44 · 28 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 22 nephrologists in Sioux Falls · All nephrologists in South Dakota