Natalya Ruben Grigoryan, MD
NPI 1811485394ActiveIndividual· Emergency Medicine· West Hills, CA
Emergency Medicine (MD) with Southeastern Emergency Physicians LLC and 2 other groups, practicing in West Hills, California. 1,959 Medicare patients in 2024, $857,584 paid; nearly all of their 219 Part D prescriptions were generic (95%). Lists Ottumwa Regional Health Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1811485394 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 30, 2018 |
| Last updated in NPPES | Jul 2, 2025 |
| Certified by provider | Jul 2, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | A174112 | CA |
| Emergency Medicine | 207P00000X | MD-54985 | IA |
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 (AR); Practitioner - Emergency Medicine (CA); Practitioner - Emergency Medicine (IA); Practitioner - Emergency Medicine (WV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,959 |
|---|---|
| Services billed | 11,616 across 28 procedure codes |
| Paid by Medicare | $857,584 |
Part D prescriptions in 2024
| Prescriptions (claims) | 219 · 221 30-day fills |
|---|---|
| Patients | 126 |
| Total drug cost | $2,375 |
| Generic share | 95% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical groups
- Southeastern Emergency Physicians LLCNewport, TN · 784 clinicians
- Mobile Medical Group Inc.Glendale, CA · 12 clinicians
- Emergency Services of Iowa LLCOttumwa, IA · 9 clinicians
Hospital affiliations
- Ottumwa Regional Health CenterOttumwa, IA
- St Marys Regional Medical CenterRussellville, AR
Other facilities
- Cipher Home HealthHome health agency · Burbank, CA
- Selaphiel Home Health Care, IncHome health agency · Glendale, CA
- Sunlight Homecare Inc.Home health agency · Sunland, CA
- Valley View Home Health CareHome health agency · Van Nuys, CA
- With Love Home HealthHome health agency · Glendale, 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 40 emergency medicine physicians in West Hills · All emergency medicine physicians in California