Mikio Tachibana, MD

Medicare activity in 2024

Official CMS public-use data for Mikio Tachibana, 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)256 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)253 services
3. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)171 services
4. Administration of influenza virus vaccine (G0008)139 services
5. Insertion of needle into vein for collection of blood sample (36415)137 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 disease36%
• Arthritis33%
• Diabetes28%
• Osteoporosis20%

Hospitals where Mikio Tachibana works

Medicare's Facility Affiliation Data lists Mikio Tachibana 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.

• Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050224
• Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050678
• Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050603

Practice locations

Addresses where Mikio Tachibana is enrolled with Medicare (CMS data updated October 2, 2026).

• 11100 Warner Ave, Suite 154Fountain Valley, CA 92708 (714) 966‑2800
• 4950 Barranca Pkwy, Suite 205bIrvine, CA 92604 (949) 262‑0200

Group practices

Medicare enrollment lists Mikio Tachibana as a member of this group (CMS data updated October 2, 2026).

• Perpetual Wound Rescue9 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Fountain Valley

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

• Ahmed F. Alsadek, MD
• Eric R. Panahi
• Reza Rasouli, MD
• Jessica Vo, MD
• Lily H. Do, DO
• Phong H. Bui, MD
• Sara H. Ghazi, DO
• Whitney Ngo, DO

All internal medicine doctors in Fountain Valley →

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