Kwun W. Wen, MD

Medicare activity in 2024

Official CMS public-use data for Kwun W. Wen, 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. Pathology examination of tissue using a microscope, intermediate complexity (88305)1,090 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)327 services
3. Special stained specimen slides to examine tissue, initial procedure (88342)158 services
4. Pathology examination of tissue using a microscope, moderately high complexity (88307)69 services
5. Special stained specimen slides to examine tissue including interpretation and report (88313)58 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 cholesterol73%
• High blood pressure64%
• Arthritis38%
• Diabetes28%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)27%
• Chronic kidney disease26%

Hospitals where Kwun W. Wen works

Medicare's Facility Affiliation Data lists Kwun W. Wen 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 Health Hyde HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050152
• UCSF Health Stanyan HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050457
• 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 Kwun W. Wen is enrolled with Medicare (CMS data updated October 2, 2026).

• 400 Parnassus Ave, McB300San Francisco, CA 94143 (415) 476‑1000

Group practices

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

• University of California San Francisco1,839 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in California →

Other pathologists in San Francisco

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

• Elena Nedelcu, MD
• Timothy E. Gilpatrick, MD
• Zane D. Amenhotep, MD
• Joanna J. Phillips, MD
• Deepika Sirohi, MD
• Theodore W. Kurtz, MD
• Parnaz Daneshpajouhnejad, MD
• Mohamed H. Bikhet, MD

All pathologists in San Francisco →

Other clinicians in University of California San Francisco

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

• Russell E. Ching, MD
• Dana Larsen, MD
• Amanda E. Rainey, NP
• Edwin A. Alvarez, MD
• Yuenting D. Kwong, MD
• Catherine A. Blebea, 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