Quick answers
- Does Weiwen Zheng accept Medicare assignment?
- Yes. Medicare's clinician data says Weiwen Zheng 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 Weiwen Zheng see?
- In 2024, CMS data shows 182 Original Medicare patients and 1,750 services for Weiwen Zheng. This counts Original Medicare only and measures volume, not quality.
- What is Weiwen Zheng's NPI number?
- 1023059201. 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 Weiwen Zheng, 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 | 182 |
|---|---|
| Services billed to Medicare | 1,750 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)563 services
- Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic (G2012)310 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)162 services
- Advance care planning, first 30 minutes (99497)109 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)95 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%
- Diabetes43%
- Arthritis40%
- Chronic kidney disease40%
- COPD35%
Hospitals where Weiwen Zheng works
Medicare's Facility Affiliation Data lists Weiwen Zheng 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.
- Chinese HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050407
Practice locations
Addresses where Weiwen Zheng is enrolled with Medicare (CMS data updated October 2, 2026).
- 950 Stockton St, Suite 328San Francisco, CA 94108 (415) 398‑2698
Specialties
- Family Practiceprimary
Other family doctors in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023059201 |
| 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