Quick answers
- Does Joanne Y. Zhang accept Medicare assignment?
- Yes. Medicare's clinician data says Joanne Y. Zhang 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 Joanne Y. Zhang see?
- In 2024, CMS data shows 201 Original Medicare patients and 716 services for Joanne Y. Zhang. This counts Original Medicare only and measures volume, not quality.
- What is Joanne Y. Zhang's NPI number?
- 1952764730. 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 Joanne Y. Zhang, 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 | 201 |
|---|---|
| Services billed to Medicare | 716 |
| Different services or procedures | 74 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)110 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)91 services
- X-ray of wrist, minimum of 3 views (73110)76 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)61 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)41 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 cholesterol75%
- High blood pressure72%
- Arthritis64%
- Osteoporosis30%
- Anxiety29%
- Ischemic heart disease26%
Practice locations
Addresses where Joanne Y. Zhang is enrolled with Medicare (CMS data updated October 2, 2026).
- 4647 Zion AveSan Diego, CA 92120 (619) 528‑5000
Group practices
Medicare enrollment lists Joanne Y. Zhang as a member of this group (CMS data updated October 2, 2026).
- Southern California Permanente Medical Group11,293 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in San Diego
Clinicians with the same Medicare primary specialty in San Diego, CA — not a recommendation.
Other clinicians in Southern California Permanente Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University 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) | 1952764730 |
| 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
- 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