Quick answers
- Does Madeline W. Yung accept Medicare assignment?
- Yes. Medicare's clinician data says Madeline W. Yung accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Madeline W. Yung see?
- In 2024, CMS data shows 245 Original Medicare patients and 819 services for Madeline W. Yung. This counts Original Medicare only and measures volume, not quality.
- What is Madeline W. Yung's NPI number?
- 1285098707. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Madeline W. Yung, 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.
| Original Medicare patients | 245 |
|---|---|
| Services billed to Medicare | 819 |
| Different services or procedures | 41 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)141 services
- Measurement of corneal curvature and depth of eye (92136)114 services
- Imaging of retina (92134)101 services
- Established patient complete exam of visual system (92014)67 services
- Removal of cataract with insertion of prosthetic lens (66984)59 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 pressure71%
- High cholesterol67%
- Arthritis40%
- Diabetes33%
- Chronic kidney disease26%
- Depression23%
Hospitals where Madeline W. Yung works
Medicare's Facility Affiliation Data lists Madeline W. Yung 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
- Zuckerberg San Francisco General Hospital & Trauma CenterSan Francisco, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050228
Practice locations
Addresses where Madeline W. Yung is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 1001 Potrero AveSan Francisco, CA 94110
- 1001 Potrero Ave Bldg 80 Ward 83, Suite 32San Francisco, CA 94110 (628) 206‑8610
- 1600 Divisadero StSan Francisco, CA 94115 (415) 476‑1000
- 2330 Post StSan Francisco, CA 94115 (415) 476‑4029
- 3100 San Pablo AveBerkeley, CA 94702 (510) 985‑5020
Group practices
Medicare enrollment lists Madeline W. Yung as a member of these groups (CMS data updated October 2, 2026).
- University of California San Francisco1,839 clinicians in the group
- UCSF Medical Group Business Services1,598 clinicians in the group
- University of California SFGH Medical Group587 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Other clinicians in University of California San Francisco
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285098707 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians