Oana V. Spataru, MD

Medicare activity in 2024

Official CMS public-use data for Oana V. Spataru, 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. Critical care, first 30-74 minutes (99291)404 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)194 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)187 services
4. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)97 services
5. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)24 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%
• Stroke or mini-stroke75%
• Arthritis46%
• Diabetes36%
• Chronic kidney disease35%

Hospitals where Oana V. Spataru works

Medicare's Facility Affiliation Data lists Oana V. Spataru 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.

• California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050008
• Highland HospitalOakland, CA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 050320
• John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050496
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050180
• Sutter Delta Medical CenterAntioch, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050523

Practice locations

Addresses where Oana V. Spataru is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

• 1100 Van Ness AveSan Francisco, CA 94109 (415) 600‑0140
• 1411 E 31st StOakland, CA 94602 (510) 437‑4800
• 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (510) 809‑5897
• 1601 Ygnacio Valley Rd, Suite 100Walnut Creek, CA 94598 (925) 939‑3000
• 1601 Ygnacio Vly RdWalnut Creek, CA 94596

Group practices

Medicare enrollment lists Oana V. Spataru as a member of these groups (CMS data updated October 2, 2026).

• Sutter Bay Medical Foundation3,829 clinicians in the group
• Alameda Health System601 clinicians in the group
• John Muir Trauma Physicians Billing Service113 clinicians in the group

Specialties

• Neurologyprimary

Find other Neurology doctors in California →

Other neurologists in San Francisco

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

• Tina T. Shih, MD
• Riley Bove, MD
• Vineeta Singh, MD
• Pritikanta Paul, MD
• Idelisse Ortiz Torres, MD
• Christine K. Fox, MD
• Ann N. Poncelet, MD
• Lennox Byer, MD

All neurologists in San Francisco →

Other clinicians in Sutter Bay Medical Foundation

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

• William Brubaker, MD
• Alexander J. Ramirez, MD
• Robert E. Lundahl, MD
• Ana Kang
• Shailendri E. Philip, MD
• Shirley S. Yu, OD

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