Ilene Weintraub Yohay, M.D.
NPI 1669486262ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Flossmoor, IL
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Flossmoor, Illinois, trained at University of Pittsburgh School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $2,653,445 for 4,407 claims, against $65,000 paid for services in 2024. Alexion Pharmaceuticals, Inc. was the largest of 10 companies reporting payments in 2025, $950.07 in all, mostly food and beverage.
Overview
| NPI | 1669486262 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 28, 2006 |
| Last updated in NPPES | Mar 13, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 036086089 | 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 - Endocrinology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 476 |
|---|---|
| Services billed | 1,050 across 13 procedure codes |
| Paid by Medicare | $65,000 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,407 · 11,133 30-day fills |
|---|---|
| Patients | 631 |
| Total drug cost | $2,653,445 |
| Generic share | 47% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL
- Ingalls Memorial HospitalHarvey, IL
- The University of Chicago Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$950.07 · 20 payments from 10 companies
- 2024$2,898 · 29 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $270.00 | 2 |
| Insulet Corporation | $234.54 | 7 |
| Medtronic, Inc. | $224.65 | 2 |
| Mannkind Corporation | $42.50 | 1 |
| Sequel Med Tech, LLC | $42.04 | 2 |
What the 2025 payments were for
- Food and Beverage$907.57 · 19 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other endocrinologists in Flossmoor
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