Quick answers
- Does Sophia Y. Siu accept Medicare assignment?
- Yes. Medicare's clinician data says Sophia Y. Siu 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 Sophia Y. Siu see?
- In 2024, CMS data shows 140 Original Medicare patients and 822 services for Sophia Y. Siu. This counts Original Medicare only and measures volume, not quality.
- What is Sophia Y. Siu's NPI number?
- 1508132564. 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 Sophia Y. Siu, 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 | 140 |
|---|---|
| Services billed to Medicare | 822 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Exam of visual field with extended testing (92083)104 services
- Photography of the retina (92250)79 services
- Imaging of retina (92134)77 services
- Extended exam of the back part of the eye with optic nerve drawing (92202)77 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)66 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 cholesterol73%
- High blood pressure62%
- Diabetes42%
- Arthritis32%
- Chronic kidney disease22%
- Ischemic heart disease18%
Practice locations
Addresses where Sophia Y. Siu is enrolled with Medicare (CMS data updated October 2, 2026).
- 3701 Main St, Suite 2Flushing, NY 11354 (718) 808‑8688
- 5318 7th AveBrooklyn, NY 11220 (212) 858‑9828
Group practices
Medicare enrollment lists Sophia Y. Siu as a member of this group (CMS data updated October 2, 2026).
- Sophia SIU M.D. PLLC3 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Flushing
Clinicians with the same Medicare primary specialty in Flushing, NY — not a recommendation.
Other clinicians in Sophia SIU M.D. PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1508132564 |
| 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