Walter Gwok Wo Au, OD
Optometrist · Aiea, HI
Walter Gwok Wo Au, OD is an optometrist with a practice address in Aiea, Hawaii, and NPI 1114563582, issued on Nov 20, 2019. Check the license (Hawaii OD-922, as entered in NPPES) with the Hawaii board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Walter Gwok Wo Au
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OD-922 HI
Self-reported in NPPES; status is on the state search - Practice location
- 98-1247 Kaahumanu St Ste 105, Aiea, HI 96701
- Phone
- (808) 487-5500
- Enumerated
- Nov 20, 2019
- Record last updated
- Feb 1, 2026
- Entity
- Type 1 · individual
8 nearest optometrist records → All 353 in Hawaii → Look up another NPI →
Also registered at 98-1247 Kaahumanu St Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nguyet-Angelica Doan, ODOptometrist1295573558
Verify Walter Gwok Wo Au in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Hawaii board licenses this profession
Search for license OD-922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average optometrist in 2024
214 Medicare Part D claims for 90 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 71% of claims.
Most prescribed
- Latanoprost73 claims
- Lumigan27 claims
- Vyzulta23 claims
- Neomycin-Polymyxin-Dexameth20 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: $551.84
28 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Walter Gwok Wo Au among 353 optometrist records in Hawaii
Walter Gwok Wo Au, OD is one of 353 optometrist records with a practice address in Hawaii. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2026 · 72% 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 Hawaii practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
16 optometrist records list a practice address in Aiea
They are 16 of the 1,481 NPPES records with a practice address in Aiea, and 353 optometrist records in Hawaii.
All 353 in Hawaii → Every provider in Aiea → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Edwin Endo, O.D.Aiea, HI 967011861471674
- Edwin Endo, O.D.Aiea, HI 967011073975843
- Miles Fujinaka, O.D.Aiea, HI 967011679566343
- Rae Holt, O.D.Aiea, HI 967011346322328
- Colin Imaoka, O.D.Aiea, HI 967011649725698
- Isaac Kaopua, O.D.Aiea, HI 967011104982768
- Wayne Matsuyama, O.D.Aiea, HI 967011750355764
- Marissa Matsuyama, O.D.Aiea, HI 967011134591365
Common questions
What is Walter Gwok Wo Au, OD's NPI number?
Walter Gwok Wo Au, OD's National Provider Identifier (NPI) is 1114563582, issued on Nov 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Walter Gwok Wo Au, OD located?
The NPPES record lists a practice address at 98-1247 Kaahumanu St Ste 105, Aiea, HI, 96701. Phone: (808) 487-5500. Providers update this record themselves, so call before visiting.
How can I verify Walter Gwok Wo Au, OD's license?
NPPES lists Hawaii license number OD-922, as entered by the provider. Search the Hawaii board that licenses this profession; the NPPES record confirms identity only.
How much does Walter Gwok Wo Au, OD prescribe under Medicare Part D?
In 2024, Walter Gwok Wo Au, OD had 214 Medicare Part D claims for 90 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.