Karen Zaghiyan, MD

Medicare activity in 2024

Official CMS public-use data for Karen Zaghiyan, 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 of hemorrhoid (46500)455 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)410 services
3. Diagnostic exam of rectum and lower large bowel using an endoscope (45300)77 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)76 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)49 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%
• High blood pressure62%
• Arthritis57%
• Ischemic heart disease36%
• Osteoporosis34%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)33%

Hospitals where Karen Zaghiyan works

Medicare's Facility Affiliation Data lists Karen Zaghiyan 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 Karen Zaghiyan is enrolled with Medicare (CMS data updated October 2, 2026).

• 8737 Beverly Blvd, Suite 101West Hollywood, CA 90048 (310) 289‑9224

Specialties

• Colorectal Surgery (Proctology)primary

Find other Colorectal Surgery (Proctology) doctors in California →

Other colorectal surgeons in California

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

• Phillip R. Fleshner, MD
• Alessio Pigazzi, MD
• Christina N. Jenkins, MD
• Joel Dean, MD
• Petar Vukasin, MD
• Kyle N. Ota, MD
• David Row, MD
• Matthew T. Brady, MD

All colorectal surgeons in California →

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