Quick answers
- Does Kristine K. Yin accept Medicare assignment?
- Yes. Medicare's clinician data says Kristine K. Yin 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 Kristine K. Yin see?
- In 2024, CMS data shows 340 Original Medicare patients and 911 services for Kristine K. Yin. This counts Original Medicare only and measures volume, not quality.
- What is Kristine K. Yin's NPI number?
- 1275853608. 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 Kristine K. Yin, 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 | 340 |
|---|---|
| Services billed to Medicare | 911 |
| Different services or procedures | 24 |
| 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)405 services
- Imaging of retina (92134)142 services
- Imaging of optic nerve (92133)90 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)88 services
- Exam of visual field with extended testing (92083)73 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%
- Arthritis46%
- Diabetes45%
- Chronic kidney disease28%
- Ischemic heart disease23%
Practice locations
Addresses where Kristine K. Yin is enrolled with Medicare (CMS data updated October 2, 2026).
- 475 W Badillo StCovina, CA 91723 (626) 732‑2200
Group practices
Medicare enrollment lists Kristine K. Yin as a member of this group (CMS data updated October 2, 2026).
- East-West Eye Institute a Medical Corporation16 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in East-West Eye Institute a Medical Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275853608 |
| 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