Sarah R. Marquez, MD

Medicare activity in 2024

Official CMS public-use data for Sarah R. Marquez, 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)68 services
2. Insertion of needle into vein for collection of blood sample (36415)42 services
3. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)20 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 pressure63%
• High cholesterol62%
• Arthritis54%
• Diabetes31%
• Anxiety23%
• Chronic kidney disease23%

Hospitals where Sarah R. Marquez works

Medicare's Facility Affiliation Data lists Sarah R. Marquez 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.

• Providence Holy Cross Medical CenterMission Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050278

Practice locations

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

• 11333 Sepulveda BlvdMission Hills, CA 91345 (818) 365‑9531

Group practices

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

• Providence Facey Medical Foundation385 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Mission Hills

Clinicians with the same Medicare primary specialty in Mission Hills, CA — not a recommendation.

• Parth J. Shah, MD
• Andre G. Sahakian, MD
• Tarannum Alam, MD
• Amel Reguieg, MD
• Andrea C. Sanchez, MD
• Mher Onanyan, MD
• Rania Khoukaz, MD
• Sarah A. Swanson

All internal medicine doctors in Mission Hills →

Other clinicians in Providence Facey Medical Foundation

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

• Andrew K. Friend
• Vanessa K. Murillo, NP
• Silpa Yalamanchi, MD
• Touraj Zolfaghari, MD
• Parth J. Shah, MD
• Mya E. Levy, 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