AILEEN CHANG O.D.
NPI 1356781785
Optometrist in Sunnyvale, CA

Q: What is Aileen Chang's NPI number?

The NPI number for Aileen Chang is 1356781785. It was assigned to this individual provider in the NPPES registry on June 30, 2013. The provider is also known as Aileen Liu Od.

Q: What is Aileen Chang's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

Q: When was this NPI record last updated?

The NPPES record for Aileen Chang was last updated on February 19, 2020. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since June 30, 2013PECOS EnrolledAccepts Medicare Assignment

1085 W EL CAMINO REAL, SUNNYVALE, CA 94087(408) 524-5900 Get Directions Write a Review

NPPES record last updated: February 19, 2020. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Feb 19, 2020, Jan 23, 2020, Nov 21, 2016 (3 updates tracked since 2016).

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About Aileen Chang O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

AILEEN CHANG O.D. (NPI 1356781785) is an individual optometrist in Sunnyvale, California, licensed in California (14626TLG) and active in the NPI registry since June 2013. She is enrolled in Medicare PECOS and is a graduate of Southern California College Of Optometry (2013).

NPPES Registry Identity

NPI1356781785

Entity TypeIndividualFemale

Primary Taxonomy152W00000X

Provider Legal NameAILEEN CHANGCredential: O.D.

Location Address1085 W EL CAMINO REALSunnyvale, CA 94087-1030

Mailing Address325 Distel CirLos Altos, CA 94022-1408

Phone(408) 524-5900

Sole ProprietorNo

Medical School CMSSouthern California College Of OptometryGraduated 2013

Enumeration DateJune 30, 2013

Last NPPES UpdateFebruary 19, 20203 updates tracked since enumeration

✔ NPI 1356781785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers

Taxonomy Code152W00000X

Licenses✔ Licensed in CA · 14626TLG✔ Licensed in NY · TUV007978

Definition

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

1085 W EL CAMINO REAL, Sunnyvale, CA 94087

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Other Names 1

Other Name (5)Aileen Liu Od

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross Blue Shield of Wyoming.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Aileen Chang O.d. 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.

PECOS PAC ID1153610183

PECOS Enrollment IDI20160516000738

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 11

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

173 services170 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

160 services136 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

127 services125 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

91 services73 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

60 services58 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

34 services34 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94087 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$156.67 typical visit price

range $70.37 – $206.04

Typical copayment $39.16 (range $17.59 – $51.51)

Most-billed visit code 99204

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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