Nancy Tsui, OD
Optometrist · Anaheim, CA
Nancy Tsui, OD is an optometrist with a practice address in Anaheim, California, and NPI 1841785037, issued on Jun 29, 2018. Check the license (California OPT33944-TLG, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nancy Tsui
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT33944-TLG CA
Self-reported in NPPES; status is on the state search - Practice location
- 500 S Anaheim Hills RD Ste 234, Anaheim, CA 92807
- Phone
- (714) 921-0232
- Enumerated
- Jun 29, 2018
- Record last updated
- Jan 25, 2022
- Fax
- (714) 921-0535
- Medicare enrollment
- Enrolled (PECOS I20210217001807); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 500 S Anaheim Hills RD Ste 234
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Angela Kwak, O.D.Optometrist1255564860
- Kathryn Lewis, MDOphthalmology Physician1992334262
Verify Nancy Tsui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT33944-TLGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5.3 times the Medicare Part D claims of the average optometrist in 2024
1,476 Medicare Part D claims for 434 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 51% of claims.
Most prescribed
- Latanoprost563 claims
- Dorzolamide-Timolol147 claims
- Prednisolone Acetate105 claims
- Neomycin-Polymyxin-Dexameth67 claims
- Brimonidine Tartrate65 claims
- Timolol Maleate65 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: $93.65
3 payments; by number, the most common kind was food and beverage; the largest payer was CooperVision Inc. The 34,453 providers of this specialty with any payment received $769.99 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
- Retina Institute OF California Medical Group, A California Medical ParAnaheim, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy Tsui among 8,308 optometrist records in California
Nancy Tsui, OD is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2018 · median 2008 among the 3,573 with a school on file
- Record last updated2022 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
115 optometrist records list a practice address in Anaheim
They are 115 of the 9,018 NPPES records with a practice address in Anaheim, and 8,308 optometrist records in California.
All 8,308 in California → Every provider in Anaheim → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Harry Charm, ODAnaheim Hills, CA 928071144215575
- Robert Downs, O.D.Anaheim, CA 928071093899817
- Catherine Heyman, ODAnaheim, CA 928071215030622
- Edward Kimmel, ODAnaheim, CA 928071801963665
- George Kusztyk, ODAnaheim, CA 928071780755678
- Ronald Lacroix, O.D.Anaheim, CA 928071548333560
- Dawn Lam, O.D.Anaheim, CA 928071720081029
- Gary Lovcik, O.D.Anaheim Hills, CA 928071427028562
Common questions
What is Nancy Tsui, OD's NPI number?
Nancy Tsui, OD's National Provider Identifier (NPI) is 1841785037, issued on Jun 29, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Tsui, OD located?
The NPPES record lists a practice address at 500 S Anaheim Hills RD Ste 234, Anaheim, CA, 92807. Phone: (714) 921-0232. Providers update this record themselves, so call before visiting.
How can I verify Nancy Tsui, OD's license?
NPPES lists California license number OPT33944-TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Nancy Tsui, OD prescribe under Medicare Part D?
In 2024, Nancy Tsui, OD had 1,476 Medicare Part D claims for 434 beneficiaries; the average among optometrist prescribers was 277. 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.