Aileen Sy
NPI 1801152327 · Ophthalmology Physician · Santa Clara, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aileen Sy is a Ophthalmology Physician provider in Santa Clara, CA (NPI 1801152327).
Provider details
- NPI number
- 1801152327
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A128835 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 367 | 149 |
| Prednisolone Acetate | 201 | 130 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 176 | 68 |
| Brimonidine Tartrate | 122 | 54 |
| Timolol Maleate | 121 | 57 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 109 | 87 |
| Dorzolamide Hcl | 79 | 30 |
Practice location
Mailing address
Additional practice locations (1)
- 5901 E 7th StLong Beach, CA 90822-5201Phone: (562) 826-8000
Registry dates
- Enumerated
- 2012-04-09
- Last updated
- 2021-12-17
Frequently asked questions
- What is Aileen Sy's NPI number?
- Aileen Sy's National Provider Identifier (NPI) is 1801152327, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aileen Sy's specialty?
- Aileen Sy is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Aileen Sy located?
- Aileen Sy's practice location on file with NPPES is 710 Lawrence Expy Dept 490, Santa Clara, CA 95051-5173.
- What is Aileen Sy's phone number?
- The practice phone number listed in the NPPES registry for Aileen Sy is (408) 851-4100.
- Does Aileen Sy accept Medicare?
- Aileen Sy is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aileen Sy's NPI active?
- Yes — Aileen Sy's NPI (1801152327) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.