Heidi Wehlus, M.D.
NPI 1912163130ActiveIndividual· Internal Medicine· Buffalo Grove, IL
Internal Medicine (M.D.) in Buffalo Grove, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $266,684 for 4,372 claims, against $126,695 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 4 companies reporting payments in 2025, $99.91 in all, mostly food and beverage.
Overview
| NPI | 1912163130 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 7, 2008 |
| Last updated in NPPES | Jul 31, 2026 |
| Certified by provider | Jul 31, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-122890 | 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 | 321 |
|---|---|
| Services billed | 1,516 across 35 procedure codes |
| Paid by Medicare | $126,695 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,372 · 11,300 30-day fills |
|---|---|
| Patients | 430 |
| Total drug cost | $266,684 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Internal Medicine |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Advocate Lutheran General HospitalPark Ridge, IL
- Northshore University Healthsystem - Evanston HospitalEvanston, IL
- Northwest Community Hospital 1Arlington Heights, IL
Other facilities
- Advocate Home Health Care ServHome health agency · Oakbrook, IL
Industry payments (Open Payments)
- 2025$99.91 · 5 payments from 4 companies
- 2024$138.66 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $32.66 | 2 |
| Medtronic, Inc. | $23.75 | 1 |
| Astrazeneca Pharmaceuticals LP | $21.78 | 1 |
| Ascensia Diabetes Care US Inc. | $21.72 | 1 |
What the 2025 payments were for
- Food and Beverage$99.91 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 internal medicine physicians in Buffalo Grove · All internal medicine physicians in Illinois