Jenna R. Gharzeddine, MD

Medicare activity in 2024

Official CMS public-use data for Jenna R. Gharzeddine, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)489 services
2. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)328 services
3. Insertion of needle into vein for collection of blood sample (36415)263 services
4. Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)238 services
5. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)156 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%
• Arthritis60%
• Anxiety34%
• Diabetes30%
• Ischemic heart disease28%

Hospitals where Jenna R. Gharzeddine works

Medicare's Facility Affiliation Data lists Jenna R. Gharzeddine 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
• Los Robles Hospital & Medical CenterThousand Oaks, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050549

Practice locations

Addresses where Jenna R. Gharzeddine is enrolled with Medicare (CMS data updated October 2, 2026).

• 124 Macaw LnSimi Valley, CA 93065 (805) 306‑0304
• 2950 Sycamore DrSimi Valley, CA 93065

Group practices

Medicare enrollment lists Jenna R. Gharzeddine as a member of this group (CMS data updated October 2, 2026).

• Adventist Health Physicians Network628 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Simi Valley

Clinicians with the same Medicare primary specialty in Simi Valley, CA — not a recommendation.

• Sangkyu Noh, DO
• Grace E. Shin, DO
• Sohail R. Abdi Moradi, MD
• Smita D. Mandal, MD
• Duc Nguyen, MD
• Riffat Muzaffer, MD
• Anthony T. Phan, MD
• Cynthia Velez, MD

All internal medicine doctors in Simi Valley →

Other clinicians in Adventist Health Physicians Network

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

• Juliana L. Xie, MD
• Lisa G. Chapa, NP
• Robert G. Yavrouian, MD
• Alaa Gabi, MD
• Sami I. Daher, DO
• Arian M. Nikpour, 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