NPPES file of Aug 9, 2026

Tonya Ketcham, O.D.

Optometrist · Houston, TX

Tonya Ketcham, O.D. is an optometrist with a practice address in Houston, Texas, and NPI 1902809338, issued on May 31, 2005. Check the license (Texas 6659, 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
1902809338
Name
Tonya Ketcham
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
6659 TX
6659T TX
Self-reported in NPPES; status is on the state search
Practice location
4401 Martin Luther King Blvd., Houston, TX 77204
Phone
(713) 743-2020
Enumerated
May 31, 2005
Record last updated
May 12, 2022
Fax
(713) 743-0963
Medicaid ID
175282601 TX
Medicare enrollment
Enrolled (PECOS I20041016000169); accepts Medicare assignment
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 4401 Martin Luther King Blvd.

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

  1. Beth Harper, O.D.Optometrist1710153341
  2. Wendy Harrison, O.D.Optometrist1629047220
  3. Swati Modi, O.D.Optometrist1548263809
  4. Kathryn Richdale, O.D.Optometrist1841260593
  5. Lanny Shulman, O.D.Optometrist1114929387
  6. Sadaf Siddiqui, ODOptometrist1962071829

Verify Tonya Ketcham 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 6659
    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
Find the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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73% fewer Medicare Part D claims than the average optometrist in 2024

74 Medicare Part D claims for 22 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 69% of claims.

  1. Tonya Ketcham74
  2. Specialty average277

Most prescribed

  1. Latanoprost38 claims
  2. Lumigan24 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.

Bills Medicare through one group practice

  1. University OF Houston SystemHouston, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Tonya Ketcham among 5,006 optometrist records in Texas

Tonya Ketcham, 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 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 91% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1990 · median 2010 among the 2,894 with a school on file
  • Record last updated2022 · 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. Robert Bailey, O.D.Houston, TX 772041932102621
  2. Jan Bergmanson, O.D.Houston, TX 772041902809627
  3. D. Black, O.D.Houston, TX 772041508869215
  4. Roger Boltz, OD.Houston, TX 772041316940950
  5. Han Cheng, O.D.Houston, TX 772041083617682
  6. Karen Fern, O.D.Houston, TX 772041912900317
  7. Amber Giannoni, O.D.Houston, TX 772041689677064
  8. Ralph Herring, O.D.Houston, TX 772041417950841

Common questions

What is Tonya Ketcham, O.D.'s NPI number?

Tonya Ketcham, O.D.'s National Provider Identifier (NPI) is 1902809338, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Tonya Ketcham, O.D. located?

The NPPES record lists a practice address at 4401 Martin Luther King Blvd., Houston, TX, 77204. Phone: (713) 743-2020. Providers update this record themselves, so call before visiting.

How can I verify Tonya Ketcham, O.D.'s license?

NPPES lists Texas license number 6659, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Tonya Ketcham, O.D. prescribe under Medicare Part D?

In 2024, Tonya Ketcham, O.D. had 74 Medicare Part D claims for 22 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.