NPPES file of Aug 9, 2026

Nancy Ann Harrison, O.D.

Optometrist · Corpus Christi, TX

Nancy Ann Harrison, O.D. is an optometrist with a practice address in Corpus Christi, Texas, and NPI 1679618607, issued on Feb 20, 2007. Check the license (Texas 4265, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679618607
Name
Nancy Ann Harrison
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
4265 TX
Self-reported in NPPES; status is on the state search
Practice location
900 Morgan Ave, Corpus Christi, TX 78404
Phone
(361) 888-4288
Enumerated
Feb 20, 2007
Record last updated
Sep 2, 2022
Medicare enrollment
Enrolled (PECOS I20150702002420); 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 900 Morgan Ave

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

  1. Leslie Dooley, ODOptometrist1477617058
  2. John Dugan, MD FAAO PAOphthalmology Physician1356340574
  3. Jose Echevarria, O. D.Optometrist1972586261
  4. Jacob Moore, M.D.Ophthalmology Physician1144249277
  5. Jack Sahadi, M.D.Ophthalmology Physician1235152570

Verify Nancy Ann Harrison 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 4265
    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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2.3 times the Medicare Part D claims of the average optometrist in 2024

624 Medicare Part D claims for 221 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.

  1. Nancy Harrison624
  2. Specialty average277

Most prescribed

  1. Latanoprost261 claims
  2. Brimonidine Tartrate65 claims
  3. Timolol Maleate55 claims
  4. Dorzolamide-Timolol44 claims
  5. Dorzolamide Hcl42 claims
  6. Lumigan19 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score100.0
  2. Costout of 100 · 30%100.0
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Jacob J Moore MD PABeeville, TX

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

Nancy Ann Harrison among 5,006 optometrist records in Texas

Nancy Ann Harrison, 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 2007, is newer than 35% of them.

  • NPI issued2007 · 35% of these records are older, 55% newer
  • In a Medicare fileYes · 74% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1985 · 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.

The 8 optometrist records with the nearest ZIP codes

  1. Leslie Dooley, ODCorpus Christi, TX 784041477617058
  2. Anthony Eby, O.D.Corpus Christi, TX 784041568461762
  3. Jose Echevarria, O. D.Corpus Christi, TX 784041972586261
  4. Cynthia Foster, O.D.Corpus Christi, TX 784051306940507
  5. Clayton Boyd, O.D.Corpus Christi, TX 784101720463698
  6. Alfredo Castaneda, O.D.Corpus Christi, TX 784101063690329
  7. William Crisp, O.D.Corpus Christi, TX 784101063542975
  8. Marcus Gonzales, ODCorpus Christi, TX 784101417147596

Common questions

What is Nancy Ann Harrison, O.D.'s NPI number?

Nancy Ann Harrison, O.D.'s National Provider Identifier (NPI) is 1679618607, issued on Feb 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Nancy Ann Harrison, O.D. located?

The NPPES record lists a practice address at 900 Morgan Ave, Corpus Christi, TX, 78404. Phone: (361) 888-4288. Providers update this record themselves, so call before visiting.

How can I verify Nancy Ann Harrison, O.D.'s license?

NPPES lists Texas license number 4265, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Nancy Ann Harrison, O.D. prescribe under Medicare Part D?

In 2024, Nancy Ann Harrison, O.D. had 624 Medicare Part D claims for 221 beneficiaries; the average among optometrist prescribers was 277. Part D covers Medicare prescriptions only.

What is Nancy Ann Harrison, O.D.'s MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.