Kristine W. Breyer, MD

Medicare activity in 2024

Official CMS public-use data for Kristine W. Breyer, 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)28 services
2. Insertion of artery tube for blood sampling or infusion through skin (36620)23 services
3. Anesthesia for extensive surgery on spine (00670)18 services
4. Emergent insertion of breathing tube into windpipe using an endoscope (31500)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 cholesterol75%
• Arthritis51%
• Ischemic heart disease50%
• Chronic kidney disease47%
• Heart failure45%

Hospitals where Kristine W. Breyer works

Medicare's Facility Affiliation Data lists Kristine W. Breyer 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.

• UCSF Medical CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050454

Practice locations

Addresses where Kristine W. Breyer is enrolled with Medicare (CMS data updated October 2, 2026).

• 505 Parnassus AveSan Francisco, CA 94143 (415) 476‑1000

Group practices

Medicare enrollment lists Kristine W. Breyer as a member of this group (CMS data updated October 2, 2026).

• University Anesthesia Medical Group408 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in California →

Other anesthesiologists in San Francisco

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

• Anup Patel, MD
• Caroline N. Dejean, MD
• James C. Jiang, MD
• Daniel Wong, MD
• Wei Zhou, MD
• Bonnie Yen, MD
• Atsuko Baba, MD
• Charlene M. Swift, MD

All anesthesiologists in San Francisco →

Other clinicians in University Anesthesia Medical Group

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

• Kate L. Petty, MD
• Donna Joy C. Gurne, NP
• Wei Zhou, MD
• Arthur Chyan, DO
• Bonnie Yen, MD
• Steven Utstein, CNA

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