Emily Elizabeth Gaster, M.D.
NPI 1669836276ActiveIndividual· Dermatology· Sioux Falls, SD
Dermatology (M.D.) with Avera McKennan, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $271,555 for 465 claims, against $95,668 paid for services in 2024. Lilly USA, LLC was the largest of 7 companies reporting payments in 2025, $295.68 in all, mostly food and beverage. Lists Avera Marshall Regional Medical Ctr and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1669836276 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 9, 2016 |
| Last updated in NPPES | Apr 28, 2022 |
| Certified by provider | Apr 28, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 12091 | SD |
| Pathology, Dermatopathology | 207ZD0900X | 12091 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,317 |
|---|---|
| Services billed | 3,205 across 63 procedure codes |
| Paid by Medicare | $95,668 |
Part D prescriptions in 2024
| Prescriptions (claims) | 465 · 530 30-day fills |
|---|---|
| Patients | 179 |
| Total drug cost | $271,555 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Dermatology |
Medical group
- Avera McKennanSioux Falls, SD · 959 clinicians
Hospital affiliations
- Avera Marshall Regional Medical CtrMarshall, MN
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- Avera Queen of PeaceMitchell, SD
- Avera St Mary's HospitalPierre, SD
- Regional Health Services of Howard CountyCresco, IA
Industry payments (Open Payments)
- 2025$295.68 · 10 payments from 7 companies
- 2024$32.60 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $124.66 | 1 |
| Genzyme Corporation | $38.95 | 2 |
| Sun Pharmaceutical Industries Inc. | $38.05 | 2 |
| Janssen Biotech, Inc. | $31.50 | 1 |
| Abbvie Inc. | $31.15 | 2 |
What the 2025 payments were for
- Food and Beverage$295.68 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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