Mikayel Grigoryan, M.D.
NPI 1801003686ActiveIndividual· Neurological Surgery· Glendale, CA
Neurological Surgery (M.D.) in Glendale, California, licensed in CA, with an NPI issued in May 2007. 278 Medicare patients in 2024, $102,777 paid; nearly all of their 123 Part D prescriptions were generic (98%). Microvention, Inc. was the largest of 18 companies reporting payments in 2025, $9,511 in all, mostly consulting fees. Lists Adventist Health Sierra Vista and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1801003686 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 17, 2007 |
| Last updated in NPPES | Nov 3, 2021 |
| Certified by provider | Oct 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Neurological Surgery Primary | 207T00000X | A107120 | CA |
| Psychiatry & Neurology, Neurology | 2084N0400X | A107120 | CA |
| Psychiatry & Neurology, Vascular Neurology | 2084V0102X | A107120 | CA |
| Radiology, Neuroradiology | 2085N0700X | A107120 | CA |
| Radiology, Vascular & Interventional Radiology | 2085R0204X | A107120 | 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 - Neurology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 278 |
|---|---|
| Services billed | 706 across 27 procedure codes |
| Paid by Medicare | $102,777 |
Part D prescriptions in 2024
| Prescriptions (claims) | 123 · 153 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $4,410 |
| Generic share | 98% of claims |
Education and affiliations
| Graduation year | 1996 |
|---|---|
| Medicare specialty | Neurology |
| Secondary specialties | Neurosurgery |
Hospital affiliations
- Adventist Health Sierra VistaSan Luis Obispo, CA
- Adventist Health Simi ValleySimi Valley, CA
- Glendale Adventist Medical CenterGlendale, CA
- Usc Verdugo Hills HospitalGlendale, CA
Industry payments (Open Payments)
- 2025$9,511 · 74 payments from 18 companies
- 2024$6,515 · 102 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Microvention, Inc. | $4,675 | 7 |
| Stryker Corporation | $3,465 | 34 |
| Abbott Laboratories | $347.34 | 10 |
| Depuy Synthes Sales Inc. | $260.19 | 3 |
| Medtronic, Inc. | $137.63 | 2 |
What the 2025 payments were for
- Consulting Fee$4,320 · 1 payment
- Food and Beverage$4,290 · 70 payments
- Travel and Lodging$900.64 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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