Ann Renee Davis, MD
NPI 1528012846ActiveIndividual· Internal Medicine, Cardiovascular Disease· Naperville, IL
Internal Medicine, Cardiovascular Disease (MD) in Naperville, Illinois, trained at Loyola University of Chicago, Stritch School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $437,845 for 4,701 claims, against $179,227 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 21 companies reporting payments in 2025, $3,596 in all, mostly food and beverage.
Overview
| NPI | 1528012846 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 20, 2006 |
| Last updated in NPPES | Jul 14, 2021 |
| Certified by provider | Jul 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 036.088789 | IL |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 036088789 | IL |
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 - Cardiovascular Disease (Cardiology) (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 644 |
|---|---|
| Services billed | 2,487 across 28 procedure codes |
| Paid by Medicare | $179,227 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,701 · 12,875 30-day fills |
|---|---|
| Patients | 728 |
| Total drug cost | $437,845 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Loyola University of Chicago, Stritch School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Edward HospitalBolingbrook, IL · 96 clinicians
- Cardiovascular Institute Gpe IncNaperville, IL · 51 clinicians
Hospital affiliations
- Advocate Good Samaritan HospitalDowners Grove, IL
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
- Morris Hospital & Healthcare CentersMorris, IL
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$3,596 · 82 payments from 21 companies
- 2024$3,883 · 82 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $651.82 | 11 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $414.07 | 6 |
| Actelion Pharmaceuticals US, Inc. | $358.41 | 3 |
| Alnylam Pharmaceuticals Inc. | $235.27 | 6 |
| Cvrx, Inc. | $203.51 | 1 |
What the 2025 payments were for
- Food and Beverage$3,596 · 82 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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