Mikayla Lynn Heronimus, PA-C
NPI 1205460862ActiveIndividual· Physician Assistant· Sioux Falls, SD
Physician Assistant (PA-C) with Sanford Medical Center, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $515,510 for 3,333 claims, against $4,002 paid for services in 2024. Genzyme Corporation was the largest of 8 companies reporting payments in 2025, $355.56 in all, mostly food and beverage. Lists Orange City Area Health System and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1205460862 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Feb 23, 2020 |
| Last updated in NPPES | May 9, 2023 |
| Certified by provider | May 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 111257 | IA |
| Physician Assistant | 363A00000X | 1429 | 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 - Physician Assistant (IA); Practitioner - Physician Assistant (MN); Practitioner - Physician Assistant (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 64 |
|---|---|
| Services billed | 92 across 5 procedure codes |
| Paid by Medicare | $4,002 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,333 · 7,701 30-day fills |
|---|---|
| Patients | 794 |
| Total drug cost | $515,510 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Sanford Medical CenterSioux Falls, SD · 857 clinicians
Hospital affiliations
- Orange City Area Health SystemOrange City, IA
- Sanford Luverne Medical CenterLuverne, MN
- Sanford Usd Medical CenterSioux Falls, SD
Industry payments (Open Payments)
- 2025$355.56 · 13 payments from 8 companies
- 2024$218.41 · 10 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $125.00 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $116.55 | 5 |
| Amgen Inc. | $29.68 | 2 |
| Bayer Healthcare Pharmaceuticals Inc. | $19.63 | 1 |
| E.R. Squibb & Sons, L.L.C. | $19.21 | 1 |
What the 2025 payments were for
- Food and Beverage$355.56 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 255 physician assistants in Sioux Falls · All physician assistants in South Dakota