Brian Leish, M.D.
NPI 1417087073ActiveIndividual· Family Medicine· Laguna Hills, CA
Family Medicine (M.D.) in Laguna Hills, California, trained at University of California, Geffen School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $621,972 for 7,813 claims, against $56,139 paid for services in 2024.
Overview
| NPI | 1417087073 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 6, 2007 |
| Last updated in NPPES | Nov 22, 2025 |
| Certified by provider | Nov 22, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | G58832 | 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 - Family Practice (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 727 across 36 procedure codes |
| Paid by Medicare | $56,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,813 · 17,005 30-day fills |
|---|---|
| Patients | 701 |
| Total drug cost | $621,972 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Healthcare Partners Affiliates Medical GroupAnaheim, CA · 754 clinicians
Hospital affiliations
- Memorialcare Saddleback Medical CenterLaguna Hills, CA
- Providence Mission HospitalMission Viejo, CA
Other facilities
- Care Plus Home HealthHome health agency · Laguna Hills, CA
- Mission Home Health of Irvine, LLCHome health agency · Irvine, 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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