AILEEN SY
NPI 1801152327
Ophthalmology in Santa Clara, CA
About Aileen Sy NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AILEEN SY (NPI 1801152327) is an individual ophthalmology provider in Santa Clara, California, licensed in California (A128835) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Long Beach, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Aileen Sy is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Aileen Sy reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 95051 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA CLARA, CA 95051
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Aileen Sy's NPI number?
The NPI number for Aileen Sy is 1801152327. It was assigned to this individual provider in the NPPES registry on April 9, 2012.
Where is Aileen Sy located?
Aileen Sy practices at 710 Lawrence Expy Dept 490, Santa Clara, CA 95051. The listed phone number is (408) 851-4100.
What is Aileen Sy's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Aileen Sy enrolled in Medicare?
Yes. Aileen Sy is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Aileen Sy's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aileen Sy reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Aileen Sy's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Aileen Sy was last updated on December 17, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Aileen Sy · NPI 1801152327
Ophthalmology physician in Santa Clara, California. Individual provider, active in the CMS NPPES registry since April 9, 2012.
## Identity
- **NPI:** 1801152327 (Entity type: Individual)
- **Enumerated:** April 9, 2012
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A128835 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 710 LAWRENCE EXPY DEPT 490, Santa Clara, CA 95051-5173
- **Phone:** (408) 851-4100
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** December 17, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1801152327) · Data from the CMS NPPES public registry.