Quick answers
- Does Henrik Ghantarchyan accept Medicare assignment?
- Yes. Medicare's clinician data says Henrik Ghantarchyan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Henrik Ghantarchyan's NPI number?
- 1699359521. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Henrik Ghantarchyan works
Medicare's Facility Affiliation Data lists Henrik Ghantarchyan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Adventist Health White MemorialLos Angeles, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050103
- Arrowhead Regional Medical CenterColton, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050245
- Northridge Hospital Medical CenterNorthridge, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050116
Practice locations
Addresses where Henrik Ghantarchyan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1720 E Cesar E Chavez AveLos Angeles, CA 90033 (323) 268‑5000
- 18406 Roscoe Blvd, Suite ANorthridge, CA 91325 (818) 700‑5678
- 18460 Roscoe BlvdNorthridge, CA 91325
- 400 N Pepper AveColton, CA 92324 (909) 580‑1000
Group practices
Medicare enrollment lists Henrik Ghantarchyan as a member of these groups (CMS data updated October 2, 2026).
- Dignity Health Medical Foundation1,184 clinicians in the group
- Inpatient Specialists of California PC385 clinicians in the group
- Quantum Healthcare Medical Associates Inc109 clinicians in the group
- Clinic Services of California Medical Group Inc61 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in Dignity Health Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699359521 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians