Anthony M. Janiga, M.D.
NPI 1992884167ActiveIndividual· Dermatology· Naperville, IL
Dermatology (M.D.) in Naperville, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $102,100 for 247 claims, against $50,078 paid for services in 2024. Abbvie Inc. was the largest of 14 companies reporting payments in 2025, $1,340 in all, mostly food and beverage.
Overview
| NPI | 1992884167 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 6, 2006 |
| Last updated in NPPES | May 4, 2020 |
| Certified by provider | May 4, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 036-077825 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 363 |
|---|---|
| Services billed | 2,179 across 43 procedure codes |
| Paid by Medicare | $50,078 |
Part D prescriptions in 2024
| Prescriptions (claims) | 247 · 280 30-day fills |
|---|---|
| Patients | 140 |
| Total drug cost | $102,100 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Dermatology |
Medical group
- Oak Dermatology LLCItasca, IL · 21 clinicians
Industry payments (Open Payments)
- 2025$1,340 · 63 payments from 14 companies
- 2024$1,164 · 64 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $359.99 | 24 |
| Janssen Biotech, Inc. | $250.87 | 6 |
| Lilly USA, LLC | $160.57 | 7 |
| Incyte Corporation | $151.74 | 11 |
| Genzyme Corporation | $87.46 | 2 |
What the 2025 payments were for
- Food and Beverage$1,245 · 62 payments
- Education$94.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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