Sean Cahill, MD
NPI 1801862206ActiveIndividual· Pediatrics· Naperville, IL
Opted out of Medicare from January 2026 to January 2028. Pediatrics (MD) in Naperville, Illinois, licensed in IL, with an NPI issued in February 2006. Their prescriptions cost Medicare Part D more than their services did: $80,493 for 2,241 claims, against $30,221 paid for services in 2024. Novo Nordisk Inc was the largest of 12 companies reporting payments in 2025, $674.16 in all, mostly food and beverage.
Overview
| NPI | 1801862206 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 24, 2006 |
| Last updated in NPPES | Apr 1, 2021 |
| Certified by provider | Apr 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics Primary | 208000000X | 36105864 | IL |
| Internal Medicine | 207R00000X | 36105864 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jan 1, 2026 – Jan 1, 2028 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 237 |
|---|---|
| Services billed | 417 across 13 procedure codes |
| Paid by Medicare | $30,221 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,241 · 5,689 30-day fills |
|---|---|
| Patients | 321 |
| Total drug cost | $80,493 |
| Generic share | 93% of claims |
Industry payments (Open Payments)
- 2025$674.16 · 27 payments from 12 companies
- 2024$212.25 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $149.85 | 7 |
| Abbvie Inc. | $118.68 | 4 |
| Amgen Inc. | $79.95 | 4 |
| Merck Sharp & Dohme LLC | $71.65 | 3 |
| Exact Sciences Corporation | $51.65 | 2 |
What the 2025 payments were for
- Food and Beverage$674.16 · 27 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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