Ian K. Hornstra, MD
NPI 1124044359ActiveIndividual· Dermatology· Saint Louis, MO
Dermatology (MD) in Saint Louis, Missouri, trained at University of Missouri, Kansas City, School of Medicine (class of 1986). Part D covered 30 prescriptions written in 2024, 97% of them generic. Abbvie Inc. reported $113.32 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1124044359 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 14, 2006 |
| Last updated in NPPES | May 7, 2024 |
| Certified by provider | May 7, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | R2H85 | MO |
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 - Dermatology (MO) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 30 · 30 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $629.86 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Missouri, Kansas City, School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Dermatology |
Medical group
- Dermatological Care, Inc.Saint Louis, MO · 11 clinicians
Industry payments (Open Payments)
- 2025$113.32 · 6 payments from 1 company
- 2024$55.59 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $113.32 | 6 |
What the 2025 payments were for
- Food and Beverage$113.32 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 121 dermatologists in Saint Louis · All dermatologists in Missouri