Aileen Y. Sy

  • Santa Clara, CA
  • Ophthalmologist
NPI1801152327PAC ID6608157813
Part D claims, 2024
1,425
Publications
12
Affiliated sites
1
Medical group
1
Insurance carriers
1
Practice address
710 Lawrence Expy, Santa Clara, CA 95051
Practice phone
Call (408) 851-1000
Professional email
Get professional email
Personal email
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Mobile number
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Social profiles

Primary practice

Permanente Medical Group Inc

Santa Clara, California

See all 3 affiliations

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Aileen Y. Sy is an ophthalmologist in Santa Clara, California

Aileen Sy practices at Permanente Medical Group Inc in Santa Clara, California.

Aileen Sy's NPI, 1801152327, was assigned on April 9, 2012. Aileen Sy graduated from University of California San Francisco School of Medicine in 2012. Aileen Sy's California license number on file is A128835.

NPI and contact details
Medicare PAC ID
6608157813
NPI enumeration date
April 9, 2012
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(408) 851-1000
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
40
Medical school graduation
2012

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)

Aileen Y. Sy practices at Permanente Medical Group Inc in Santa Clara, California

Aileen Sy's primary practice is Permanente Medical Group Inc, at 710 Lawrence Expy, Santa Clara, CA 95051 in Santa Clara County. The practice phone is (408) 851-1000.

  • Permanente Medical Group Inc
    710 Lawrence Expy, Santa Clara, CA 95051 · Santa Clara CountyPhone(408) 851-1000

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Aileen Y. Sy is affiliated with 2 sites of care and 1 medical group

Aileen Sy's primary practice is Permanente Medical Group Inc in Santa Clara, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Aileen Sy to 1 more group practice or clinic, named with a free account.

See all 3 affiliations for Aileen Sy

Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Aileen Y. Sy's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Aileen Sy practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Permanente Medical Group IncAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Aileen Y. Sy is one of 2,621 ophthalmologists in California

Ophthalmology is Aileen Sy's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Aileen Sy is board certified in ophthalmology by the American Board of Ophthalmology. Aileen Sy has a license on file in California.

Specialties and state licenses

  • Ophthalmology, CaliforniaPrimaryLicense A128835 · 2014 to 2025 · taxonomy 207W00000X

Clinical focus

Dmand AI lists age-related macular degeneration, cataract and cataract surgery with lens implant among the conditions Aileen Sy treats.

Ophthalmologists near Aileen Sy

Counts of ophthalmologists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Aileen Y. Sy's patients have a median age of 68

Across all payers, Dmand AI patient panel data puts Aileen Sy's median patient age at 68, with 67% women.

Aileen Sy's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 68

Patient panel by sex, all payers

  • Women67%
  • Men32%

Source: Dmand AI Patient Panel Data

Aileen Y. Sy wrote 1,425 Medicare Part D claims in 2024

In 2024, Aileen Sy wrote 1,425 Medicare Part D claims for 403 patients. 81% of them were for generic drugs. CMS names the drug for 1,355 of them, across 13 drugs with 11 or more claims each, at $43,847 in total drug cost. In 2023, CMS named 1,482 claims across 14 drugs.

Part D claims, 20241,425
Drugs named by CMS13
Total drug cost$43,847
Part D patients403

Aileen Sy's Part D claims by kind of drug, 2024

  • Generic1,153 claims81%
  • Brand-name272 claims19%

Aileen Sy's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,4822024: 1,3559%

Drugs named by CMS: 13 in 2024, 14 in 2023.

See all prescribing by Aileen Sy

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Aileen Y. Sy takes part in Medicare

Aileen Sy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

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Aileen Y. Sy has 12 publications on record

Dmand AI links 12 papers to Aileen Sy, published from 2011 to 2021. 2012 was the busiest year, with 4. The most frequent topics are Corneal Ulcer, Glucocorticoids and Administration, Topical. Aileen Sy has published most often in Br J Ophthalmol. Aileen Sy's most frequent co-authors are Nisha Acharya, MD, Thomas M. Lietman, MD and Stephen D. McLeod, MD.

Papers12
Years published2011 to 2021

Aileen Sy's papers by year, 2011 to 2021

Topics Aileen Sy writes about most

  • Corneal Ulcer
  • Glucocorticoids
  • Administration, Topical
  • Double-Blind Method
  • Eye Infections, Bacterial
  • Visual Acuity
  • Antifungal Agents
  • Anti-Infective Agents

Aileen Sy's most frequent co-authors

Recent publications by Aileen Sy

See all 12 publications and co-authors

See who Aileen Sy researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Aileen Sy works with, so you can find a warm path to the right ophthalmologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Aileen Y. Sy graduated from University of California San Francisco School of Medicine

Aileen Sy graduated from University of California San Francisco School of Medicine in 2012.

  1. Medical schoolUniversity of California San Francisco School of Medicine
  2. Board certified in ophthalmologyAmerican Board of Ophthalmology

Source: Dmand AI Professional Profile Data

Aileen Y. Sy accepts plans from 1 insurance carrier

Aileen Sy is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

  • Kaiser Permanente

Plan types Aileen Sy accepts, by number of carriers

  1. EPO1
  2. HMO1
  3. POS1

Source: Dmand AI Insurance Network Data

Sources for Aileen Y. Sy's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data
Medicare patients and the all-payer patient panelDmand AI Patient Panel Data
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Aileen Y. Sy

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Aileen Y. Sy's NPI number?

Aileen Y. Sy's NPI number is 1801152327. It was assigned on April 9, 2012, and it is active in the NPI Registry.

What does Aileen Y. Sy specialize in?

Aileen Y. Sy is an ophthalmologist in Santa Clara, California. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).

Where does Aileen Y. Sy practice?

Aileen Sy practices at 710 Lawrence Expy, Santa Clara, CA 95051. Aileen Sy's primary practice is Permanente Medical Group Inc in Santa Clara, California. Dmand AI also links Aileen Sy to 1 group practice or clinic.

What is Aileen Y. Sy's office phone number?

The practice phone on file for Aileen Sy is (408) 851-1000.

What is Aileen Y. Sy's medical license number?

Aileen Sy's California license number on file is A128835.

What medical group is Aileen Y. Sy part of?

Aileen Sy is linked to The Permanente Medical Group, Inc.

Does Aileen Y. Sy accept Medicare?

Yes. CMS lists Aileen Sy as accepting Medicare assignment.

Is Aileen Y. Sy board certified?

Yes. Aileen Sy is board certified in ophthalmology by the American Board of Ophthalmology.

Where did Aileen Y. Sy go to medical school?

Aileen Sy graduated from University of California San Francisco School of Medicine in 2012.

What drugs does Aileen Y. Sy prescribe most?

In 2024 Medicare Part D data, Aileen Sy's most prescribed drugs by claims were Latanoprost, Prednisolone Acetate and Dorzolamide-Timolol.

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How long has Aileen Y. Sy been practicing?

Aileen Sy graduated from medical school in 2012, 14 years ago.

Does Aileen Y. Sy do research?

Dmand AI links 12 publications to Aileen Sy, published from 2011 to 2021.

Who does Aileen Y. Sy publish with?

Aileen Sy's most frequent co-authors are Nisha Acharya, MD (7 shared papers), Thomas M. Lietman, MD (7 shared papers) and Stephen D. McLeod, MD (4 shared papers).

What insurance does Aileen Y. Sy accept?

Aileen Sy is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.

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