Rio Sutikno-Ong, MD

Medicare activity in 2024

Official CMS public-use data for Rio Sutikno-Ong, 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. Emergency department visit with high level of medical decision making (99285)90 services
2. Critical care, first 30-74 minutes (99291)84 services
3. Emergency department visit with moderate level of medical decision making (99284)50 services
4. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)46 services
5. Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)27 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%
• Diabetes63%
• Arthritis51%
• Chronic kidney disease46%
• Ischemic heart disease38%

Hospitals where Rio Sutikno-Ong works

Medicare's Facility Affiliation Data lists Rio Sutikno-Ong 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.

• Greater El Monte Community HospitalSouth el Monte, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050738
• Monterey Park HospitalMonterey Park, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050736

Practice locations

Addresses where Rio Sutikno-Ong is enrolled with Medicare (CMS data updated October 2, 2026).

• 900 S Atlantic BlvdMonterey Park, CA 91754 (877) 346‑2211
• 9080 Colima RdWhittier, CA 90605 (877) 346‑2211

Group practices

Medicare enrollment lists Rio Sutikno-Ong as a member of this group (CMS data updated October 2, 2026).

• Gem Medical Group Corporation57 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in California →

Other emergency medicine doctors in Monterey Park

Clinicians with the same Medicare primary specialty in Monterey Park, CA — not a recommendation.

• Ben Saiyasombat, MD
• Keivan Edalat, MD
• Daniel Solomin, DO
• John B. Levin, MD
• Lu Yin, MD
• Bliss Yoon, DO
• Seung H. Choi, MD
• David Chen, MD

All emergency medicine doctors in Monterey Park →

Other clinicians in Gem Medical Group Corporation

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

• Kari A. Heil, NP
• Ben Saiyasombat, MD
• Jeremy D. Williams, MD
• Wilfred M. Rico, MD
• Benjamin D. Adams, DO
• Anh A. Mai, 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