Quick answers
- Does Alen Zehnaly accept Medicare assignment?
- Yes. Medicare's clinician data says Alen Zehnaly 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 Alen Zehnaly see?
- In 2024, CMS data shows 321 Original Medicare patients and 455 services for Alen Zehnaly. This counts Original Medicare only and measures volume, not quality.
- What is Alen Zehnaly's NPI number?
- 1396900320. 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 Alen Zehnaly, 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 | 321 |
|---|---|
| Services billed to Medicare | 455 |
| Different services or procedures | 79 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Insertion of artery tube for blood sampling or infusion through skin (36620)67 services
- Anesthesia for procedure on heart and large blood vessels (00560)30 services
- Anesthesia for other procedure on upper abdomen (00790)22 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)21 services
- Anesthesia for procedure for total knee joint replacement (01402)17 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%
- Arthritis72%
- Diabetes55%
- Ischemic heart disease52%
- Heart failure45%
Hospitals where Alen Zehnaly works
Medicare's Facility Affiliation Data lists Alen Zehnaly 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 Simi ValleySimi Valley, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050236
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625
- Glendale Adventist Medical CenterGlendale, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050239
Practice locations
Addresses where Alen Zehnaly is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 8; the Medicare profile lists all.
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 1500 E Chevy Chase Dr, Suite 201Glendale, CA 91206 (818) 863‑4099
- 1500 E Duarte RdDuarte, CA 91010
- 1509 Wilson TerGlendale, CA 91206 (818) 409‑8000
- 209 Fair Oaks AveSouth Pasadena, CA 91030 (626) 396‑2900
Group practices
Medicare enrollment lists Alen Zehnaly as a member of these groups (CMS data updated October 2, 2026).
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
- City of Hope Medical Foundation982 clinicians in the group
- Glendale Adventist Medical Center103 clinicians in the group
- Simi Valley Anesthesia Medical Group25 clinicians in the group
Specialties
- Anesthesiologyprimary
- Interventional Pain Managementalso
Other anesthesiologists in Duarte
Clinicians with the same Medicare primary specialty in Duarte, CA — not a recommendation.
Other clinicians in Cedars-Sinai Medical Care Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Pittsburgh School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396900320 |
| 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