Andrew John Ridder, M.D.
NPI 1285993253ActiveIndividual· Psychiatry & Neurology, Neurology· Sioux Falls, SD
Psychiatry & Neurology, Neurology (M.D.) in Sioux Falls, South Dakota, trained at Sanford School of Medicine of University of South Dakota (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $993,534 for 4,002 claims, against $159,364 paid for services in 2024. Abbvie Inc. was the largest of 8 companies reporting payments in 2025, $234.44 in all, mostly food and beverage.
Overview
| NPI | 1285993253 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 11, 2012 |
| Last updated in NPPES | Sep 20, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 10894 | SD |
| Psychiatry & Neurology, Neurology | 2084N0400X | 4301102371 | MI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Neurology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 659 |
|---|---|
| Services billed | 10,622 across 30 procedure codes |
| Paid by Medicare | $159,364 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,002 · 5,566 30-day fills |
|---|---|
| Patients | 624 |
| Total drug cost | $993,534 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | Sanford School of Medicine of University of South Dakota |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Medical group
- Avera McKennanSioux Falls, SD · 959 clinicians
Hospital affiliations
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- Avera St LukesAberdeen, SD
- Lakes Regional HealthcareSpirit Lake, IA
- Pipestone County Medical CenterPipestone, MN
- Spencer Municipal HospitalSpencer, IA
Industry payments (Open Payments)
- 2025$234.44 · 11 payments from 8 companies
- 2024$1,680 · 14 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $57.72 | 3 |
| Amneal Pharmaceuticals LLC | $45.84 | 2 |
| Vanda Pharmaceuticals Inc. | $35.05 | 1 |
| Genentech USA, Inc. | $27.95 | 1 |
| Axsome Therapeutics, Inc. | $20.22 | 1 |
What the 2025 payments were for
- Food and Beverage$234.44 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other neurologists in Sioux Falls
- 1013295682
- 1023128444
- 1043797392
- 1164638185
- 1265818405
- 1285157065
- 1316369523
- 1326273681
- 1396309670
- 1508873811
- 1558747279
- 1609899665
All 36 neurologists in Sioux Falls · All neurologists in South Dakota