Czarina J. Roxas, MD

Medicare activity in 2024

Official CMS public-use data for Czarina J. Roxas, 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. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)77 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)40 services
3. Emergency department visit with high level of medical decision making (99285)35 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)32 services
5. Amplifed dna or rna probe detection of severe acute respiratory syndrome coronavirus 2 (covid-19) antigen (87635)22 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%
• Arthritis57%
• Ischemic heart disease47%
• Depression37%
• Anxiety37%

Hospitals where Czarina J. Roxas works

Medicare's Facility Affiliation Data lists Czarina J. Roxas 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.

• Saint John's Health CenterSanta Monica, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050290

Practice locations

Addresses where Czarina J. Roxas is enrolled with Medicare (CMS data updated October 2, 2026).

• 901 Wilshire Blvd, Fl 1Santa Monica, CA 90401 (310) 829‑8945

Group practices

Medicare enrollment lists Czarina J. Roxas as a member of this group (CMS data updated October 2, 2026).

• Providence Saint Johns Medical Foundation281 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Santa Monica

Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.

• Carmela Yomtoubian, MD
• Timothy C. Bullard, MD
• Derek W. Altema, MD
• Marissa L. Zobrist, MD
• Hannah H. Spungen, MD
• Susannah F. Empson, MD
• George W. Lim, MD
• Michael Robbins, MD

All emergency medicine doctors in Santa Monica →

Other clinicians in Providence Saint Johns Medical Foundation

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

• Gary A. Green, MD
• Ajmin Sarian, NP
• Pouya Shafipour, MD
• Annika Canta
• Naveed Wagle, MD
• Rahul Dixit, 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