Maryliza El-Masry, MD

Medicare activity in 2024

Official CMS public-use data for Maryliza El-Masry, 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.

Most frequent services

1. Injection, fulvestrant, 25 mg (J9395)1,620 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)858 services
3. Insertion of needle into vein for collection of blood sample (36415)478 services
4. Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle (96402)162 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)99 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 cholesterol75%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)72%
• High blood pressure67%
• Arthritis64%
• Osteoporosis42%
• Ischemic heart disease37%

Hospitals where Maryliza El-Masry works

Medicare's Facility Affiliation Data lists Maryliza El-Masry 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.

• Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050625

Practice locations

Addresses where Maryliza El-Masry is enrolled with Medicare (CMS data updated October 2, 2026).

• 9090 Wilshire Blvd, Fl 3Beverly Hills, CA 90211 (310) 888‑8680

Group practices

Medicare enrollment lists Maryliza El-Masry as a member of this group (CMS data updated October 2, 2026).

• Cedars-Sinai Medical Care Foundation1,692 clinicians in the group

Specialties

• Medical Oncologyprimary
• Internal Medicinealso

Find other Medical Oncology doctors in California →

Other oncologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

• Howard S. Yeh, MD
• Linnea I. Chap, MD
• Honghao Yang, MD
• Jennifer Rosenbluth, MD
• Tatjana Kolevska, MD
• Khai T. Vu, MD
• Jasmine C. Huynh, MD
• Arnav Mehta, MD

All oncologists in California →

Other clinicians in Cedars-Sinai Medical Care Foundation

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• John Michael S. Sanchez, MD
• Laura Zung, MD
• Michael R. Manuel, MD
• Megan Karoly, PA
• Elisse J. Vassallo, NP
• Stephanie Y. Chiu, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians