Randall Scott Fenner, M.D.
NPI 1073780375ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Sioux Falls, SD
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Sioux Falls, South Dakota, trained at Sanford School of Medicine of University of South Dakota (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $652,756 for 2,493 claims, against $60,341 paid for services in 2024. Dexcom, Inc. was the largest of 4 companies reporting payments in 2025, $119.62 in all, mostly food and beverage.
Overview
| NPI | 1073780375 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 15, 2008 |
| Last updated in NPPES | Apr 4, 2022 |
| Certified by provider | Apr 4, 2022 |
Specialties and licenses
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 - Endocrinology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 402 |
|---|---|
| Services billed | 1,110 across 12 procedure codes |
| Paid by Medicare | $60,341 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,493 · 5,015 30-day fills |
|---|---|
| Patients | 378 |
| Total drug cost | $652,756 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Sanford School of Medicine of University of South Dakota |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
Hospital affiliations
- Orange City Area Health SystemOrange City, IA
- Sanford Sheldon Medical CenterSheldon, IA
- Sanford Usd Medical CenterSioux Falls, SD
- Sanford Vermillion Medical CenterVermillion, SD
- Sanford Worthington Medical CenterWorthington, MN
Industry payments (Open Payments)
- 2025$119.62 · 6 payments from 4 companies
- 2024$184.85 · 11 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dexcom, Inc. | $42.73 | 2 |
| Amgen Inc. | $34.22 | 2 |
| Chiesi USA, Inc. | $26.40 | 1 |
| Sequel Med Tech, LLC | $16.27 | 1 |
What the 2025 payments were for
- Food and Beverage$119.62 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Sioux Falls
- 1396711016
- 1043598337
- 1841215654
- 1942230636
- 1578589677
- 1346625415
- 1124023882
- 1740462803
- 1659375038
- 1700237914
- 1164528261
- 1588072532
All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in South Dakota →