Quick answers
- Does Yiyun Zhou accept Medicare assignment?
- Yes. Medicare's clinician data says Yiyun Zhou 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 Yiyun Zhou see?
- In 2024, CMS data shows 647 Original Medicare patients and 1,881 services for Yiyun Zhou. This counts Original Medicare only and measures volume, not quality.
- What is Yiyun Zhou's NPI number?
- 1326501537. 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 Yiyun Zhou, 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 | 647 |
|---|---|
| Services billed to Medicare | 1,881 |
| Different services or procedures | 27 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)352 services
- Established patient complete exam of visual system (92014)303 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)286 services
- Imaging of retina (92134)134 services
- Ultrasound scan to determine eye length and lens power (76519)100 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%
- Arthritis51%
- Diabetes32%
- Anxiety23%
- Ischemic heart disease22%
Practice locations
Addresses where Yiyun Zhou is enrolled with Medicare (CMS data updated October 2, 2026).
- 10810 Connecticut AveKensington, MD 20895 (301) 929‑7100
- 1221 Mercantile LnLargo, MD 20774 (301) 618‑5700
Group practices
Medicare enrollment lists Yiyun Zhou as a member of this group (CMS data updated October 2, 2026).
- Kaiser Foundation Health Plan of the Mid Atlantic States, Inc1,899 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Kensington
Clinicians with the same Medicare primary specialty in Kensington, MD — not a recommendation.
Other clinicians in Kaiser Foundation Health Plan of the Mid Atlantic States, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2019 (7 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326501537 |
| 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