Mary H. Dau, O.D.
Optometrist · Katy, TX
Mary H. Dau, O.D. is an optometrist with a practice address in Katy, Texas, and NPI 1205210374, issued on Jul 17, 2015. Check the license (Texas 8757TG, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary H. Dau
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 8757TG TX
Self-reported in NPPES; status is on the state search - Practice location
- 6630 FM 1463 RD Ste A400, Katy, TX 77494
- Phone
- (281) 394-7090
- Enumerated
- Jul 17, 2015
- Record last updated
- Feb 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190122001390); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 5,006 in Texas → Look up another NPI →
Verify Mary H. Dau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 8757TGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average optometrist in 2024
20 Medicare Part D claims, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 55% of 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: $483.84
4 payments; by number, the most common kind was food and beverage; the largest payer was Johnson & Johnson Vision Care, 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.
Mary H. Dau among 5,006 optometrist records in Texas
Mary H. Dau, O.D. is one of 5,006 optometrist records with a practice address in Texas. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 65% of them.
- NPI issued2015 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2015 · median 2010 among the 2,894 with a school on file
- Record last updated2021 · 59% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
83 optometrist records list a practice address in Katy
They are 83 of the 5,078 NPPES records with a practice address in Katy, and 5,006 optometrist records in Texas.
All 5,006 in Texas → Every provider in Katy → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Keith Bravenec, O.D.Katy, TX 774941821288366
- Leeann Choe, O.D.Katy, TX 774941033329784
- Wendy Chung, O.D.Katy, TX 774941144236829
- Diane Do, O.D.Katy, TX 774941629065859
- Ryann Donaldson, ODKaty, TX 774941720152051
- Joyce Khami, O.D.Katy, TX 774941740462993
- Xu Li, O.DKaty, TX 774941194912188
- Julie Ly, ODKaty, TX 774941376694240
Common questions
What is Mary H. Dau, O.D.'s NPI number?
Mary H. Dau, O.D.'s National Provider Identifier (NPI) is 1205210374, issued on Jul 17, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mary H. Dau, O.D. located?
The NPPES record lists a practice address at 6630 FM 1463 RD Ste A400, Katy, TX, 77494. Phone: (281) 394-7090. Providers update this record themselves, so call before visiting.
How can I verify Mary H. Dau, O.D.'s license?
NPPES lists Texas license number 8757TG, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mary H. Dau, O.D. prescribe under Medicare Part D?
In 2024, Mary H. Dau, O.D. had 20 Medicare Part D claims; 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.