Daniel R. Lemay, MD, PH. D.
NPI 1356347959ActiveIndividual· Neurological Surgery· Downey, CA
Neurological Surgery (MD, PH. D.) in Downey, California, trained at University of Michigan Medical School (class of 1990). Mostly services rather than prescriptions: Medicare paid $51,567 for 192 patients in 2024, with only 32 Part D claims.
Overview
| NPI | 1356347959 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PH. D. |
| Sole proprietor | No |
| NPI issued | Jun 28, 2005 |
| Last updated in NPPES | Jun 9, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | G74285 | CA |
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 - Neurosurgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 192 |
|---|---|
| Services billed | 327 across 38 procedure codes |
| Paid by Medicare | $51,567 |
Part D prescriptions in 2024
| Prescriptions (claims) | 32 · 34 30-day fills |
|---|---|
| Patients | 16 |
| Total drug cost | $1,832 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Neurosurgery |
Medical group
- Daniel R. Lemay MD PHD IncDowney, CA · 2 clinicians
Hospital affiliations
- Orange County Global Medical CenterSanta Ana, CA
- Saint Francis Medical CenterLynwood, CA
- St Mary Medical CenterLong Beach, CA
- Uci Health-LakewoodLakewood, CA
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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