NPPES file of Aug 9, 2026

Hoa K. To, OD

Optometrist · Houston, TX

Hoa K. To, OD is an optometrist with a practice address in Houston, Texas, and NPI 1568436475, issued on Feb 15, 2006. Check the license (Texas 05598T, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1568436475
Name
Hoa K. To
Credential
OD
Primary taxonomy
Optometrist 152W00000X
License number
05598T TX
Self-reported in NPPES; status is on the state search
Practice location
10515 Bellaire Blvd, Houston, TX 77072
Phone
(281) 564-5588
Enumerated
Feb 15, 2006
Record last updated
Nov 20, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(281) 564-0521
Medicare enrollment
Enrolled (PECOS I20050126000651); accepts Medicare assignment
Medical or professional school
University Of Houston - College Of Optometry, 1998
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 10515 Bellaire Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Huong Nguyen, DMDGeneral Practice Dentistry1760489298

Verify Hoa K. To in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 05598T
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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93% fewer Medicare Part D claims than the average optometrist in 2024

20 Medicare Part D claims for 14 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D.

  1. Hoa To20
  2. Specialty average277

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.

Hoa K. To among 5,006 optometrist records in Texas

Hoa K. To, OD 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 2006, is newer than 9% of them.

  • NPI issued2006 · 9% of these records are older, 65% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1998 · median 2010 among the 2,894 with a school on file
  • Record last updated2007 · 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).

770 optometrist records list a practice address in Houston

They are 770 of the 61,221 NPPES records with a practice address in Houston, and 5,006 optometrist records in Texas.

The 8 optometrist records with the nearest ZIP codes

  1. Diep DinhHouston, TX 770721134545023
  2. Viet Ho, O.D.Houston, TX 770721609022573
  3. Anne Le, O.D.Houston, TX 770721568580637
  4. Valerie Le, ODHouston, TX 770721407453020
  5. Schubert-Thuy Nguyen, ODHouston, TX 770721528060464
  6. Quan Nguyen, O.D.Houston, TX 770721144584400
  7. Cathy Nguyen, ODHouston, TX 770721962901413
  8. Nhi NguyenHouston, TX 770721285293456

Common questions

What is Hoa K. To, OD's NPI number?

Hoa K. To, OD's National Provider Identifier (NPI) is 1568436475, issued on Feb 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Hoa K. To, OD located?

The NPPES record lists a practice address at 10515 Bellaire Blvd, Houston, TX, 77072. Phone: (281) 564-5588. Providers update this record themselves, so call before visiting.

How can I verify Hoa K. To, OD's license?

NPPES lists Texas license number 05598T, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Hoa K. To, OD prescribe under Medicare Part D?

In 2024, Hoa K. To, OD had 20 Medicare Part D claims for 14 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.