Colleen Ann Keegan, D.O.
NPI 1497937106ActiveIndividual· Dermatology· Naperville, IL
Dermatology (D.O.) in Naperville, Illinois, trained at Chicago College of Osteopathy (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $634,403 for 940 claims, against $75,500 paid for services in 2024.
Overview
| NPI | 1497937106 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Dec 4, 2007 |
| Last updated in NPPES | Jun 25, 2025 |
| Certified by provider | Jun 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 036-076923 | 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 | 310 |
|---|---|
| Services billed | 1,396 across 46 procedure codes |
| Paid by Medicare | $75,500 |
Part D prescriptions in 2024
| Prescriptions (claims) | 940 · 1,109 30-day fills |
|---|---|
| Patients | 274 |
| Total drug cost | $634,403 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Chicago College of Osteopathy |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Dermatology |
| Telehealth | Offers telehealth |
Medical group
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Hospital affiliation
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 dermatologists in Naperville · All dermatologists in Illinois