Evan Y. Zhao, DO

Medicare activity in 2024

Official CMS public-use data for Evan Y. Zhao, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)146 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)77 services
3. Hospital discharge day management, 30 minutes or less (99238)38 services
4. Hospital discharge day management, more than 30 minutes (99239)30 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)19 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%
• Chronic kidney disease64%
• Diabetes63%
• Ischemic heart disease50%
• Heart failure50%

Hospitals where Evan Y. Zhao works

Medicare's Facility Affiliation Data lists Evan Y. Zhao 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.

• Garfield Medical CenterMonterey Park, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050737
• Monterey Park HospitalMonterey Park, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050736
• San Gabriel Valley Medical CenterSan Gabriel, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050132

Practice locations

Addresses where Evan Y. Zhao is enrolled with Medicare (CMS data updated October 2, 2026).

• 13954 Ginger LnSan Fernando, CA 91340
• 1680 S Garfield Ave, Suite 204Alhambra, CA 91801
• 393 E Walnut StPasaden, CA 91188
• 393 E Walnut St 3rd Fl, Phr Group Provider Enrollment UnitPasadena, CA 91188

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Fernando

Clinicians with the same Medicare primary specialty in San Fernando, CA — not a recommendation.

• Jennifer C. Chen, MD
• William A. Leavitt, MD
• Stephanie Green, MD
• Dieu Thu K. Nguyen, MD
• Nasser A. Abdo, MD
• Margaret R. Stein, MD
• Hafiz U. Parray, MD
• Gilbert Rosales, MD

All internal medicine doctors in San Fernando →

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