Roger T. Tomihama, MD

Medicare activity in 2024

Official CMS public-use data for Roger T. Tomihama, 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. Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)51 services
2. Ultrasonic guidance for blood vessel access (76937)19 services
3. Ultrasonic guidance for needle placement (76942)12 services
4. Aspiration of fluid from chest cavity using imaging guidance (32555)11 services
5. Fluoroscopic guidance for insertion or removal of central vein access device (77001)11 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 cholesterol66%
• Diabetes59%
• Arthritis55%
• Chronic kidney disease49%
• Heart failure43%

Hospitals where Roger T. Tomihama works

Medicare's Facility Affiliation Data lists Roger T. Tomihama 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.

• UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348

Practice locations

Addresses where Roger T. Tomihama is enrolled with Medicare (CMS data updated October 2, 2026).

• 101 the City Dr SOrange, CA 92868 (714) 456‑7004
• 9961 Sierra AveFontana, CA 92335 (909) 427‑5000

Group practices

Medicare enrollment lists Roger T. Tomihama as a member of these groups (CMS data updated October 2, 2026).

• Southern California Permanente Medical Group11,293 clinicians in the group
• UC Regents108 clinicians in the group

Specialties

• Interventional Radiologyprimary
• Diagnostic Radiologyalso

Find other Interventional Radiology doctors in California →

Other interventional radiologists in Orange

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

• Kurt L. Openshaw, MD
• Kevin Burns, MD
• Rebecca Z. Bennett, MD
• Mahmood K. Razavi, MD
• Tammam Beydoun, MD
• John F. Shahin, MD
• Christina Boyd, MD
• Yousuf Qaseem, MD

All interventional radiologists in Orange →

Other clinicians in Southern California Permanente Medical Group

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

• Chloe Gomez, CNA
• Kin Man Lai, MD
• Lucia S. Olarte, MD
• Ezije E. Molokwu, NP
• Khanh X. Nguyen, DO
• Laura Vargas, 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