ELLIN YING-CHUN WU O.D.
NPI 1063660660
Optometrist - Corneal and Contact Management in Sunnyvale, CA

NPI Status: Active since September 08, 2008

Contact Information

1085 W EL CAMINO REAL
SUNNYVALE, CA
ZIP 94087
Phone: (408) 524-5900
Fax: (408) 524-5950

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  • Individual
  • Female
  • Years of Experience 18
  • Optometrist
  • Corneal and Contact Management
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About ELLIN WU

This page provides the complete NPI Profile along with additional information for Ellin Wu, a provider established in Sunnyvale, California with a medical specialization in Optometrist, focusing in corneal and contact management and more than 18 years of experience. She graduated from University Of California - School Of Optometry in 2008. The healthcare provider is registered in the NPI registry with number 1063660660 assigned on September 2008. The practitioner's primary taxonomy code is 152WC0802X with license number OPT13544 (CA). The provider is registered as an individual and her NPI record was last updated 5 years ago.

NPI
1063660660
Provider Name
ELLIN YING-CHUN WU O.D.
Other Name
YING-CHUN ELLIN CHEN O.D.
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
1085 W EL CAMINO REAL SUNNYVALE, CA 94087
Location Phone
(408) 524-5900
Location Fax
(408) 524-5950
Mailing Address
1085 W EL CAMINO REAL SUNNYVALE, CA 94087
Mailing Phone
(408) 524-5900
Mailing Fax
(408) 524-5950
Medical School Name
UNIVERSITY OF CALIFORNIA - SCHOOL OF OPTOMETRY
Graduation Year
2008
Is Sole Proprietor?
No
Enumeration Date
09-08-2008
Last Update Date
08-30-2021
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Location Map

Secondary Locations

  • 770 Scott Blvd
    Santa Clara, CA 95050
    (408) 296-0511
  • 130 S Sunnyvale Ave
    Sunnyvale, CA 94086
    (408) 736-3802

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Optometrist Corneal and Contact Management

Taxonomy Code
152WC0802X
Type
Eye and Vision Services Providers
License No.
OPT13544
License State
CA
Taxonomy Description
The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
OPT13544MEDICAID (05)CA 

Medicare Participation & PECOS Enrollment Status

Ellin Wu is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Ellin Wu is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME) and a Home Health Agency (HHA).

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 3971662438

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20081112000783

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: No

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Established patient complete exam of visual system

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.

This service was performed 132 times for 129 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 198 times for 161 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 70 times for 70 patients

Exam of the internal drainage system of eye

This is a procedure where your doctor examines the eye's internal drainage system, essential for maintaining eye pressure. They use specialized tools to check for blockages or damage that might lead to conditions like glaucoma. It's non-invasive and painless.

This service was performed 17 times for 17 patients

Exam of visual field with extended testing

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.

This service was performed 65 times for 51 patients

Exam to measure eye deviation and range of motion

This is an eye exam that checks for any misalignment in your eyes, also known as deviation. It also assesses the movement range of your eyes. The procedure is painless and helps in detecting conditions like strabismus or other vision issues.

This service was performed 21 times for 19 patients

Imaging of optic nerve

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).

This service was performed 104 times for 103 patients

Imaging of retina

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

This service was performed 29 times for 29 patients

New patient complete exam of visual system

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.

This service was performed 92 times for 92 patients

New patient office or other outpatient visit, 30-44 minutes

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

This service was performed 30 times for 30 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 21 times for 21 patients

Photography of the retina

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

This service was performed 60 times for 57 patients

Ultrasound scan of cornea to determine thickness

An ultrasound scan of the cornea is a non-invasive procedure that uses sound waves to measure the thickness of your cornea. This helps in diagnosing certain eye conditions and planning treatments. No discomfort or pain is typically experienced.

This service was performed 34 times for 34 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $39.16 for a new patient copayment and $21.64 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 94087 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $156.67
  • Minimum New Patient Price $70.37
  • Maximum New Patient Price $206.04
  • Average New Patient Copayment $39.16
  • Minimum New Patient Copayment $17.59
  • Maximum New Patient Copayment $51.51

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $86.56
  • Minimum Established Patient Price $23.96
  • Maximum Established Patient Price $169.6
  • Average Established Patient Copayment $21.64
  • Minimum Established Patient Copayment $5.99
  • Maximum Established Patient Copayment $42.4

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1063660660, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
0
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
6
Unchanged
Pos 7
0
Doubled → 0
Pos 8
6
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
0
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 6 → 12 → 3 0 → 0 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 0 + 1 + 2 + 3 + 1 + 2 + 6 + 0 + 6 + 1 + 2 + 24 = 50

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1063660660.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Occupational Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Audiologist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Optometrist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Ophthalmology
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Audiologist-Hearing Aid Fitter
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Ophthalmology
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist (Orthopedic)
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Occupational Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087
Physical Therapist
1085 W EL CAMINO REAL
SUNNYVALE, CA 94087

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1063660660, enumerated as an "individual" on September 08, 2008.

The provider is located at 1085 W EL CAMINO REAL SUNNYVALE, CA 94087 and the phone number is (408) 524-5900.

Optometrist with taxonomy code 152WC0802X and a focus in Corneal and Contact Management.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.