Quick answers
- Does Zarmen K. Israelian accept Medicare assignment?
- Yes. Medicare's clinician data says Zarmen K. Israelian 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.
- How many Medicare patients does Zarmen K. Israelian see?
- In 2024, CMS data shows 1,182 Original Medicare patients and 2,151 services for Zarmen K. Israelian. This counts Original Medicare only and measures volume, not quality.
- What is Zarmen K. Israelian's NPI number?
- 1417911314. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Zarmen K. Israelian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,182 |
|---|---|
| Services billed to Medicare | 2,151 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)904 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)649 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)209 services
- Telephone medical discussion with physician, 11-20 minutes (99442)96 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)84 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Diabetes75%
- Arthritis75%
- Ischemic heart disease67%
- Depression49%
Hospitals where Zarmen K. Israelian works
Medicare's Facility Affiliation Data lists Zarmen K. Israelian 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.
- Glendale Adventist Medical CenterGlendale, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050239
- Glendale Memorial Hospital & Health CenterGlendale, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050058
- USC Verdugo Hills HospitalGlendale, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050124
Practice locations
Addresses where Zarmen K. Israelian is enrolled with Medicare (CMS data updated October 2, 2026).
- 2750 Sycamore DrSimi Valley, CA 93065
- 544 N Glendale AveGlendale, CA 91206 (818) 265‑2242
- 544 N Glendale Ave, Suite BGlendale, CA 91206 (818) 265‑2242
Group practices
Medicare enrollment lists Zarmen K. Israelian as a member of this group (CMS data updated October 2, 2026).
- Adventist Health Physicians Network628 clinicians in the group
Specialties
- Endocrinologyprimary
Other endocrinologists in Simi Valley
Clinicians with the same Medicare primary specialty in Simi Valley, CA — not a recommendation.
Other clinicians in Adventist Health Physicians Network
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1417911314 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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