Nancy Elizabeth Guenthner, O.D.
Optometrist · Round Rock, TX
Nancy Elizabeth Guenthner, O.D. is an optometrist with a practice address in Round Rock, Texas, and NPI 1639335128, issued on Aug 4, 2008. Check the license (Texas 7212TG, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nancy Elizabeth Guenthner
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 7212TG TX
Self-reported in NPPES; status is on the state search - Practice location
- 17261 Smyers LN Ste 100, Round Rock, TX 78681
- Phone
- (512) 501-2100
- Enumerated
- Aug 4, 2008
- Record last updated
- Jun 27, 2022
- Fax
- (512) 827-2074
- Medicare enrollment
- Enrolled (PECOS I20090217000117); accepts Medicare assignment
- Medical or professional school
- University Of Houston - College Of Optometry, 2008
- Entity
- Type 1 · individual
8 nearest optometrist records → All 5,006 in Texas → Look up another NPI →
Also registered at 17261 Smyers LN Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Larissa Rodriguez, ODOptometrist1730062019
Verify Nancy Elizabeth Guenthner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 7212TGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average optometrist in 2024
28 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 39% of claims.
Most prescribed
- Latanoprost23 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: $226.75
5 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas 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
- Aspire Vision Care, PLLCRound Rock, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nancy Elizabeth Guenthner among 5,006 optometrist records in Texas
Nancy Elizabeth Guenthner, 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 2008, is newer than 45% of them.
- NPI issued2008 · 45% of these records are older, 51% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2008 · 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).
Optometrist providers in Texas
There are 5,006 optometrist records in Texas.
All 5,006 in Texas → Every provider in Round Rock → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- William Butler, O.D.Round Rock, TX 786811144436767
- Dana Dang, O.D.Round Rock, TX 786811952700122
- Irene Renee Fuentes, O.D.Round Rock, TX 786811265816540
- Brett Hamilton, ODRound Rock, TX 786811871528745
- Carissa Lumby, ODRound Rock, TX 786811609226794
- Larissa Rodriguez, ODRound Rock, TX 786811730062019
- Clete Smith, O.D.Round Rock, TX 786811316035876
- Clinton Stengel, O.DRound Rock, TX 786811487036612
Common questions
What is Nancy Elizabeth Guenthner, O.D.'s NPI number?
Nancy Elizabeth Guenthner, O.D.'s National Provider Identifier (NPI) is 1639335128, issued on Aug 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Nancy Elizabeth Guenthner, O.D. located?
The NPPES record lists a practice address at 17261 Smyers LN Ste 100, Round Rock, TX, 78681. Phone: (512) 501-2100. Providers update this record themselves, so call before visiting.
How can I verify Nancy Elizabeth Guenthner, O.D.'s license?
NPPES lists Texas license number 7212TG, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Nancy Elizabeth Guenthner, O.D. prescribe under Medicare Part D?
In 2024, Nancy Elizabeth Guenthner, O.D. had 28 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.