Michael A. Less, M.D
NPI 1689600611ActiveIndividual· Anesthesiology· Elmhurst, IL
Anesthesiology (M.D) with University of Chicago, practicing in Elmhurst, Illinois. Mostly services rather than prescriptions: Medicare paid $48,607 for 251 patients in 2024, with only 40 Part D claims. Lists The University of Chicago Medical Center as a hospital affiliation.
Overview
| NPI | 1689600611 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Jun 23, 2006 |
| Last updated in NPPES | May 12, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Anesthesiology Primary | 207L00000X | 036070085 | 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 - Anesthesiology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 251 |
|---|---|
| Services billed | 291 across 73 procedure codes |
| Paid by Medicare | $48,607 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 76 30-day fills |
|---|---|
| Total drug cost | $754.97 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Anesthesiology |
Medical group
- University of ChicagoChicago, IL · 1,712 clinicians
Hospital affiliation
- The University of Chicago Medical CenterChicago, 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 30 anesthesiologists in Elmhurst · All anesthesiologists in Illinois