Katherine Marie Mercy, MD
NPI 1134385255ActiveIndividual· Dermatology, MOHS-Micrographic Surgery· Naperville, IL
Dermatology, MOHS-Micrographic Surgery (MD) in Naperville, Illinois, trained at Georgetown University School of Medicine (class of 2008). 396 Medicare patients in 2024, $382,504 paid; nearly all of their 353 Part D prescriptions were generic (99%). Ucb, Inc. was the largest of 5 companies reporting payments in 2025, $159.91 in all, mostly food and beverage.
Overview
| NPI | 1134385255 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 29, 2008 |
| Last updated in NPPES | Oct 16, 2026 |
| Certified by provider | Oct 16, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology, MOHS-Micrographic Surgery Primary | 207ND0101X | 036.127624 | IL |
| Dermatology, MOHS-Micrographic Surgery | 207ND0101X | 0101262264 | VA |
| Dermatology | 207N00000X | 0101262264 | VA |
| Dermatology | 207N00000X | 036.127624 | 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 - Micrographic Dermatologic Surgery (Mds) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 396 |
|---|---|
| Services billed | 1,268 across 75 procedure codes |
| Paid by Medicare | $382,504 |
Part D prescriptions in 2024
| Prescriptions (claims) | 353 · 387 30-day fills |
|---|---|
| Patients | 204 |
| Total drug cost | $4,840 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Micrographic Dermatologic Surgery (Mds) |
Medical group
- Forefront Dermatology SCSouthlake, TX · 662 clinicians
Hospital affiliation
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$159.91 · 6 payments from 5 companies
- 2024$171.39 · 7 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ucb, Inc. | $53.40 | 2 |
| Blueprint Medicines Corporation | $32.81 | 1 |
| Lilly USA, LLC | $25.79 | 1 |
| Janssen Biotech, Inc. | $24.16 | 1 |
| Ortho Dermatologics, A Division of Bausch Health US, LLC | $23.75 | 1 |
What the 2025 payments were for
- Food and Beverage$159.91 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology, MOHS-Micrographic Surgery providers in Naperville
- 1013933431
- 1457518490
- 1710328851
- 1013559400
All Dermatology, MOHS-Micrographic Surgery providers in Illinois