Ilka Decker, M.D.
NPI 1891138616ActiveIndividual· Internal Medicine, Nephrology· Ann Arbor, MI
Internal Medicine, Nephrology (M.D.) in Ann Arbor, Michigan, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2013). Their prescriptions cost Medicare Part D more than their services did: $123,944 for 667 claims, against $80,557 paid for services in 2024.
Overview
| NPI | 1891138616 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 11, 2013 |
| Last updated in NPPES | Feb 5, 2020 |
| Certified by provider | Feb 5, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 4301109103 | MI |
| Internal Medicine | 207R00000X | 4301109103 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 154 |
|---|---|
| Services billed | 594 across 20 procedure codes |
| Paid by Medicare | $80,557 |
Part D prescriptions in 2024
| Prescriptions (claims) | 667 · 1,592 30-day fills |
|---|---|
| Patients | 99 |
| Total drug cost | $123,944 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliations
- Bronson Battle Creek HospitalBattle Creek, MI
- University of Michigan Health SystemAnn Arbor, MI
Other facilities
- University of Michigan Canton Dialysis ClinicDialysis facility · Canton, MI
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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