Quick answers
- Does Shant Shirvanian accept Medicare assignment?
- Yes. Medicare's clinician data says Shant Shirvanian 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 Shant Shirvanian see?
- In 2024, CMS data shows 1,172 Original Medicare patients and 6,609 services for Shant Shirvanian. This counts Original Medicare only and measures volume, not quality.
- What is Shant Shirvanian's NPI number?
- 1215213566. 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 Shant Shirvanian, 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 | 1,172 |
|---|---|
| Services billed to Medicare | 6,609 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)2,625 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)770 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)402 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)402 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)344 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%
- Arthritis75%
- Ischemic heart disease69%
- Diabetes66%
- Heart failure60%
Hospitals where Shant Shirvanian works
Medicare's Facility Affiliation Data lists Shant Shirvanian 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
- Keck Hospital of USCLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: not listed by Medicare · CCN 050696
- 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 Shant Shirvanian is enrolled with Medicare (CMS data updated October 2, 2026).
- 1812 Verdugo BlvdGlendale, CA 91208 (818) 306‑1477
- 435 Arden Ave, Suite 310Glendale, CA 91203 (818) 625‑6117
Group practices
Medicare enrollment lists Shant Shirvanian as a member of these groups (CMS data updated October 2, 2026).
- Apex Critical Care Inc a Medical Corp13 clinicians in the group
- Altitude Pulmonary and Critical Care Associates6 clinicians in the group
Specialties
- Critical Care (Intensivists)primary
Find other Critical Care (Intensivists) doctors in California →
Other critical care doctors in Glendale
Clinicians with the same Medicare primary specialty in Glendale, CA — not a recommendation.
Other clinicians in Apex Critical Care Inc a Medical Corp
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Un Of California, Riverside, School Of Medicine |
| Graduation year | 2006 (20 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215213566 |
| 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