Eric A. Larson, M.D.
NPI 1134124019ActiveIndividual· Internal Medicine· Sioux Falls, SD
Internal Medicine (M.D.) in Sioux Falls, South Dakota, trained at Sanford School of Medicine of University of South Dakota (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $655,045 for 10,285 claims, against $72,958 paid for services in 2024. Hydrofera LLC was the largest of 3 companies reporting payments in 2025, $51.01 in all, mostly food and beverage.
Overview
| NPI | 1134124019 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 16, 2005 |
| Last updated in NPPES | Aug 19, 2026 |
| Certified by provider | Aug 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 4727 | 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 - Internal Medicine (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,146 |
|---|---|
| Services billed | 2,679 across 10 procedure codes |
| Paid by Medicare | $72,958 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,285 · 20,914 30-day fills |
|---|---|
| Patients | 632 |
| Total drug cost | $655,045 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | Sanford School of Medicine of University of South Dakota |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
Medical group
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
Hospital affiliations
- Douglas County Memorial Hospital-CahArmour, SD
- Murray County Memorial HospitalSlayton, MN
- Sanford Luverne Medical CenterLuverne, MN
- Sanford Tracy Medical CenterTracy, MN
- Sanford Usd Medical CenterSioux Falls, SD
Other facilities
- Sanford Home HealthHome health agency · Sioux Falls, SD
- Sanford HospiceHospice · Sioux Falls, SD
- Dow Rummel VillageNursing home · Sioux Falls, SD
Industry payments (Open Payments)
- 2025$51.01 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Hydrofera LLC | $18.25 | 1 |
| Amgen Inc. | $18.23 | 1 |
| Pfizer Inc. | $14.53 | 1 |
What the 2025 payments were for
- Food and Beverage$51.01 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 124 internal medicine physicians in Sioux Falls · All internal medicine physicians in South Dakota