Ellin Ying-Chun Wu, O.D.
Corneal and Contact Management Optometrist · Sunnyvale, CA
Ellin Ying-Chun Wu, O.D. is a corneal and contact management optometrist with a practice address in Sunnyvale, California, and NPI 1063660660, issued on Sep 8, 2008. Check the license (California OPT13544, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ellin Ying-Chun Wu
- Credential
- O.D.
- Primary taxonomy
- Corneal and Contact Management Optometrist 152WC0802X
- License number
- OPT13544 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1085 W EL Camino Real, Sunnyvale, CA 94087
- Phone
- (408) 524-5900
- Enumerated
- Sep 8, 2008
- Record last updated
- Aug 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (408) 524-5950
- Medicaid ID
- OPT13544 CA
- Medicare enrollment
- Enrolled (PECOS I20081112000783); accepts Medicare assignment
- Medical or professional school
- University Of California - School Of Optometry, 2008
- Entity
- Type 1 · individual
8 nearest corneal and contact management optometrist records → All 161 in California → Look up another NPI →
Also registered at 1085 W EL Camino Real
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tayyeba Ali, M.D.Ophthalmology Physician1891947925
- Aileen Chang, O.D.Optometrist1356781785
- Amie Chien, PT, DPTPhysical Therapist1073242624
- Tasha Connolly, PTPhysical Therapist1225672777
- Paolo Cordero, AUDAudiologist1760096168
- Carly Crompton, PT, DPTPhysical Therapist1215542667
Verify Ellin Ying-Chun Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT13544Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average corneal and contact management optometrist in 2024
490 Medicare Part D claims for 185 beneficiaries, against an average of 225 among the 585 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Latanoprost136 claims
- Restasis52 claims
- Erythromycin48 claims
- Brimonidine Tartrate35 claims
- Xiidra22 claims
- Cyclosporine18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $588.72
5 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 610 providers of this specialty with any payment received $1,035.17 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSunnyvale, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellin Ying-Chun Wu among 161 corneal and contact management optometrist records in California
Ellin Ying-Chun Wu, O.D. is one of 161 corneal and contact management optometrist records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 78% of them.
- NPI issued2008 · 78% of these records are older, 19% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileYes · 32% of these records are
- Graduated2008 · median 2000 among the 52 with a school on file
- Record last updated2021 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152WC0802X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Corneal and Contact Management Optometrist providers in California
There are 161 corneal and contact management optometrist records in California.
All 161 in California → Every provider in Sunnyvale → Corneal and Contact Management Optometrist nationwide →
The 8 corneal and contact management optometrist records with the nearest ZIP codes
- Timothy Tandrow, O.D.San Francisco, CA 941041982749057
- Peter Nehrebecki, ODSan Francisco, CA 941101033240254
- John Spallone, O.D.San Francisco, CA 941151982751624
- Elaine Kwon, O.D.San Francisco, CA 941221316061237
- Anita Brew, O.D.San Francisco, CA 941321255546701
- Michael Adey, O.D.Mountain View, CA 940411427108026
- Yura Kim, O.D.Mountain View, CA 940401891060737
- Anil Sethi, ODMonterey, CA 939401891834040
Common questions
What is Ellin Ying-Chun Wu, O.D.'s NPI number?
Ellin Ying-Chun Wu, O.D.'s National Provider Identifier (NPI) is 1063660660, issued on Sep 8, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ellin Ying-Chun Wu, O.D. located?
The NPPES record lists a practice address at 1085 W EL Camino Real, Sunnyvale, CA, 94087. Phone: (408) 524-5900. Providers update this record themselves, so call before visiting.
How can I verify Ellin Ying-Chun Wu, O.D.'s license?
NPPES lists California license number OPT13544, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ellin Ying-Chun Wu, O.D. prescribe under Medicare Part D?
In 2024, Ellin Ying-Chun Wu, O.D. had 490 Medicare Part D claims for 185 beneficiaries; the average among corneal and contact management optometrist prescribers was 225. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.