Christine Amstadt, MD
NPI 1265514962ActiveIndividual· Internal Medicine· Naperville, IL
Internal Medicine (MD) in Naperville, Illinois, trained at Mid West Medical College (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $201,455 for 2,727 claims, against $54,854 paid for services in 2024.
Overview
| NPI | 1265514962 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 20, 2006 |
| Last updated in NPPES | Feb 19, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-093359 | IL |
| Pediatrics | 208000000X | 036-093359 | 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 - Internal Medicine (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 141 |
|---|---|
| Services billed | 828 across 32 procedure codes |
| Paid by Medicare | $54,854 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,727 · 6,117 30-day fills |
|---|---|
| Patients | 254 |
| Total drug cost | $201,455 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Mid West Medical College |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Pediatric Medicine |
| Telehealth | Offers telehealth |
Medical group
- Central Dupage Physician GroupGeneva, IL · 1,080 clinicians
Hospital affiliations
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Medicine Delnor Community HospitalGeneva, IL
Other facilities
- Marianjoy Rehabilitation CenterInpatient rehabilitation facility · Wheaton, 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 114 internal medicine physicians in Naperville · All internal medicine physicians in Illinois