Steven Paul Lammers, M.D.
NPI 1184600462ActiveIndividual· Psychiatry & Neurology, Psychiatry· Vernon Hills, IL
Psychiatry & Neurology, Psychiatry (M.D.) in Vernon Hills, Illinois, licensed in IL, with an NPI issued in December 2005. Their prescriptions cost Medicare Part D more than their services did: $337,560 for 5,628 claims, against $39,793 paid for services in 2024.
Overview
| NPI | 1184600462 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Dec 19, 2005 |
| Last updated in NPPES | Feb 15, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 036075721 | 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 - Psychiatry (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 306 |
|---|---|
| Services billed | 990 across 3 procedure codes |
| Paid by Medicare | $39,793 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,628 · 8,696 30-day fills |
|---|---|
| Patients | 445 |
| Total drug cost | $337,560 |
| Generic share | 96% of claims |
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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