Oluwaseyi S. Balasire, MD

Medicare activity in 2024

Official CMS public-use data for Oluwaseyi S. Balasire, 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. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)13 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%
• Diabetes69%
• Ischemic heart disease69%
• Heart failure69%

Hospitals where Oluwaseyi S. Balasire works

Medicare's Facility Affiliation Data lists Oluwaseyi S. Balasire 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.

• Alta Bates Summit Medical CenterOakland, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050043
• Eden Medical CenterCastro Valley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050488

Practice locations

Addresses where Oluwaseyi S. Balasire is enrolled with Medicare (CMS data updated October 2, 2026).

• 20101 Lake Chabot RdCastro Valley, CA 94546 (510) 886‑3400
• 20103 Lake Chabot RdCastro Valley, CA 94546 (510) 727‑3256
• 3200 Kearney StFremont, CA 94538 (510) 490‑1222
• 350 Hawthorne AveOakland, CA 94609
• 350 Hawthorne Ave, Rm 2346Oakland, CA 94609 (510) 869‑6883

Group practices

Medicare enrollment lists Oluwaseyi S. Balasire as a member of this group (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group

Specialties

• Internal Medicineprimary
• Hospitalistalso

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Castro Valley

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

• Vineetha Rangarajan, DO
• Joline W. Heo, MD
• Stephen P. Morris, MD
• Sindhu Radhakrishnan, MD
• Jyothi Bachwani, MD
• Fatma S. Khakoo, MD
• Taffere N. Mihretu, MD
• Andrea G. Dhaliwal, MD

All internal medicine doctors in Castro Valley →

Other clinicians in Sutter Bay Medical Foundation

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

• Tan Nguyen, MD
• Susan T. Butler, MD
• Gary Roper, MD
• Michael P. Johnson, MD
• Geetanjali J. Wadhavkar, MD
• Scott M. Somers, 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