Gregory Garabed Simsarian, M.D
NPI 1144250713ActiveIndividual· Emergency Medicine· Laguna Hills, CA
Emergency Medicine (M.D) in Laguna Hills, California, trained at Un of California, Irvine, College of Medicine (class of 1986). 427 Medicare patients in 2024, $61,569 paid; nearly all of their 218 Part D prescriptions were generic (92%).
Overview
| NPI | 1144250713 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | No |
| NPI issued | Jul 3, 2006 |
| Last updated in NPPES | Feb 6, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | G65647 | CA |
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 - Emergency Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 427 |
|---|---|
| Services billed | 494 across 28 procedure codes |
| Paid by Medicare | $61,569 |
Part D prescriptions in 2024
| Prescriptions (claims) | 218 · 224 30-day fills |
|---|---|
| Patients | 172 |
| Total drug cost | $6,228 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Un of California, Irvine, College of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Emergency Medicine |
Medical group
- Cep America - CaliforniaPomona, CA · 1,292 clinicians
Hospital affiliation
- Memorialcare Saddleback Medical CenterLaguna Hills, 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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All 17 emergency medicine physicians in Laguna Hills · All emergency medicine physicians in California